Ngày tải lên: 19/06/2014, 08:20
... using SIR • Then 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 ... 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 communications – Eliminates ... devices • Include – Bluetooth – 802.15.4 (ZigBee) 12 Bluetooth Protocol Stack (continued) 14 Bluetooth Protocol Stack (continued) • Network topologies (continued) – Scatternet • Group of piconets in which connections exist between...
Ngày tải lên: 13/09/2012, 10:52
High Rate Wireless Personal Area Networks
... Functionality (continued) Wireless Communications Chapter 6 High Rate Wireless Personal Area Networks Wireless# Guide to Wireless Communications 36 Competition Among WPAN Standards • IEEE 802.15.3 ... 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 ... and storage Wireless# Guide to Wireless Communications 32 How UWB Works (continued) Wireless# Guide to Wireless Communications 18 Additional MAC Layer Functionality (continued) Wireless Communications Chapter...
Ngày tải lên: 13/09/2012, 10:52
wireless personal area networks - performance, interconnection, & security with ieee 802.15.4
... 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, ... 6 PROLOGUE: WIRELESS PERSONAL AREA NETWORKS of periodic beacon transmissions facilitates the process of placing the reservation...
Ngày tải lên: 25/03/2014, 12:14
báo cáo hóa học: "A wireless body area network of intelligent motion sensors for computer assisted physical rehabilitation" pot
Ngày tải lên: 19/06/2014, 10:20
Báo cáo hóa học: " TCP-based window-size delegation method for TXOP Exchange in wireless local area networks" ppt
Ngày tải lên: 21/06/2014, 01:20
Báo cáo hóa học: " Research Article Achievable Throughput-Based MAC Layer Handoff in IEEE 802.11 Wireless Local Area Networks" pptx
Ngày tải lên: 21/06/2014, 23:20
Tài liệu Where Personal/Desktop Firewalls Fit in a Network pptx
... provide for centralized management and reporting on your personal/ desktop firewalls. It is one thing to manage a handful of perimeter network firewalls. When you start talking about implementing ... great for the IDS/IPS to effectively filter and report on. When implemented as a component of the personal firewall, however, the IDS/IPS can be configured around the very specific traffic that ... extremely important to look in detail at the enterprise-level capabilities of these products. A good personal/ desktop firewall for a home user is not necessarily going to be a good solution for 10,000...
Ngày tải lên: 21/01/2014, 02:20
Tài liệu ADC KRONE - Catalogue - Network Connetivity Solution - Work Area Products pptx
... faceplate 6644 1 152-XX 2 outlet labeling areas and 2 individual port ID areas 4-port faceplate 6644 1 154-XX 2 outlet labeling areas and 4 individual port ID areas CopperTen ™ 4-port staggered ... TNSCSFPSO4-YY 2 Includes: 2 outlet labeling areas and 4 individual port ID areas. 6-port faceplate 6644 1 156-XX 2 outlet labeling areas and 6 individual port ID areas Dual-gang flush mount faceplates ... w . a d c . c o m • + 1 - 9 5 2 - 9 3 8 - 8 0 8 0 • 1 - 8 0 0 - 3 6 6 - 3 8 9 1 Work Area Solutions Work Area Solutions Category 6A Modular Jacks *Replace XX with: 01 = White 06 = Blue 02...
Ngày tải lên: 24/01/2014, 15:20
Tài liệu AUDIT OF THE DEPARTMENT OF JUSTICE’S IMPLEMENTATION OF THE INTEGRATED WIRELESS NETWORK ppt
Ngày tải lên: 18/02/2014, 04:20
BACnet Wide Area Network Security Threat Assessment ppt
... 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
wireless ad hoc networking personal-area, local-area, and the sensory-area networks
Ngày tải lên: 01/06/2014, 11:10
Báo cáo hóa học: "Research Article Dynamic Object Tracking Tree in Wireless Sensor Network" pptx
Ngày tải lên: 21/06/2014, 17:20
Báo cáo hóa học: " Research Article An Efficient Addressing Scheme and Its Routing Algorithm for a Large-Scale Wireless Sensor Network" pptx
Ngày tải lên: 21/06/2014, 23:20
Wireless Local Area Networks
... 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