wireless personal area network wpan ppt

Ngày tải lên: 19/06/2014, 08:20

... they shift to FIR speed Wireless Communications Low Rate Wireless Personal Area Networks 2 Objectives • Describe a wireless personal area network (WPAN) • List the different WPAN standards and their ... and ZigBee work • Describe the security features of low-rate WPAN technology 3 What is a WPAN? • Wireless personal area network (WPAN) – Group of technologies that are designed for short- range ... a piconet 16 Low Rate WPAN Security • Security should be of little concern with WPANs • One of the most serious concerns is social engineering • Designing security in WPANs – Much more difficult...

Ngày tải lên: 13/09/2012, 10:52

... (continued) Wireless# Guide to Wireless Communications 18 Additional MAC Layer Functionality (continued) Wireless Communications Chapter 6 High Rate Wireless Personal Area Networks Wireless# Guide to Wireless ... are present in the same order in every frame Wireless# Guide to Wireless Communications 15 802.15.3 Network Topology (continued) Wireless# Guide to Wireless Communications 27 Ultra Wide Band (UWB) • Allows ... corrected – Also called error correction (FEC) Wireless# Guide to Wireless Communications 26 Mesh Networking (802.15.5) (continued) Wireless# Guide to Wireless Communications 28 How UWB Works • UWB...

Ngày tải lên: 13/09/2012, 10:52

Ngày tải lên: 01/09/2013, 10:30

... state is θ 0 = ( γδ/P a ) π 0 , where we make use of the probability Part I WPANS and 802.15.4 Wireless Personal Area Networks: Performance, Interconnections and Security with IEEE 802.15.4 J. ... 292 A.3 Network Topologies and Routing 293 A.4 Security 295 Appendix B Probability Generating Functions and Laplace Transforms 301 Bibliography 302 Index 311 10 PROLOGUE: WIRELESS PERSONAL AREA NETWORKS 1.4.2 ... protocol (O’Hara and Petrick 1999) is, strictly speaking, intended for wireless local area networks (LANs), rather than wireless ad hoc networks. However, it is interesting to examine it in some detail,...

Ngày tải lên: 25/03/2014, 12:14

Ngày tải lên: 19/06/2014, 10:20

Ngày tải lên: 01/08/2014, 07:21

... Spectrum Technology 47 Uses of Spread Spectrum 48 Wireless Local Area Networks 48 Wireless Personal Area Networks 49 Wireless Metropolitan Area Networks 49 FCC Specifications 49 Frequency Hopping ... popular networking certification programs leave off: wireless LANs. Your study of wireless networking will help you bring together two fascinating worlds of technology, because wireless networks ... Chapter 3 Introduction to Wireless LANs 1 The Wireless LAN Market 2 Today’s Wireless LAN Standards 3 Applications of Wireless LANs 3 Access Role 4 Network Extension 5 Building-to-Building...

Ngày tải lên: 17/02/2014, 15:20

... (or go to Start > Control Panel > Network) 2. Select your Wireless LAN Card, right click on the icon and select “Properties”. Click on Wireless Network tab. 3. Select the Access ... Windows XP Wireless Utility as an example. 2. Right click on “My Network Places” on your desktop and select “Properties” (or go to Start > Control Panel > Network) . 3. Select your Wireless ... Windows XP Wireless Utility as an example. 2. Right click on “My Network Places” on your desktop and select “Properties” (or go to Start > Control Panel > Network) . 3. Select your Wireless...

Ngày tải lên: 05/03/2014, 23:20

... can be implemented to increase network security. There are two primary types of IDS: network based and host-based. The network based system acts similarly to a network level firewall. It cannot ... information about the network con- figuration. Authentication, especially of exter- nal BACnet users. Network Layer Attacks I-Am-Router- To -Network The I-Am-Router-To -Network message can ... traffic across the untrusted network (LAN/Internet). • As a router, separates the trusted network from the untrusted and thus can act as a BACnet firewall, performing network layer or application...

Ngày tải lên: 14/03/2014, 22:20

... one considers that the AT&T Wireless IP network can connect to many other networks, including other wireless IP networks, customer networks, value-added service networks, online information ... corporate network is connected to the AT&T Wireless IP network, all or part of the corporate network is effectively connected to the AT&T Wireless IP network and, indirectly, to these other networks. Internal ... include wireless data networks requires an understanding of the security being utilized by the existing wireless data technology, as well as the security provided by networks to which the wireless network...

Ngày tải lên: 22/03/2014, 15:21

Ngày tải lên: 01/06/2014, 11:10

Ngày tải lên: 21/06/2014, 01:20

Ngày tải lên: 21/06/2014, 07:20

Ngày tải lên: 21/06/2014, 23:20

Ngày tải lên: 22/06/2014, 06:20

Ngày tải lên: 22/06/2014, 22:20

... wired network interface port • AP functions – Wireless communications base station – Bridge between the wireless and wired networks 6 Wireless Network Interface Card (continued) 5 Wireless Network ... of wireless clients and an AP • Extended Service Set (ESS) – Two or more BSS wireless networks installed in same area – Provides users with uninterrupted mobile access to the network • All wireless ... communicate among themselves Wireless Communications Wireless Local Area Networks 4 WLAN Components • Minimal hardware needed for a WLAN – Computer – ISP – Wireless network interface card – Access...

Ngày tải lên: 13/09/2012, 10:52