wireless personal area network ppt download
Low Rate Wireless Personal Area Networks
... 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
Ngày tải lên: 25/03/2014, 12:14
Báo cáo hóa học: " Accelerometer-based wireless body area network to estimate intensity of therapy in post-acute rehabilitation" pptx
Ngày tải lên: 19/06/2014, 08:20
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
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
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
Wireless Metropolitan Area Networks
... 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 ... Wireless Communications Wireless Metropolitan Area Networks 14 Multichannel Multipoint Distribution Service (MMDS) • Multichannel multipoint distribution service (MMDS) – Fixed broadband wireless ... same network • WiMAX MAC layer makes it easy for carriers to deploy the network • Range of a WiMAX network is measured in miles • Cellular phone operators can easily incorporate WiMAX networks 3 What...
Ngày tải lên: 13/09/2012, 10:52
Describe wireless wide area networks (WWANs) and how they are used
... 1xEVDO • For 2.5G CDMA2000 1xRTT networks 25 Binary Runtime Environment for Wireless (BREW) • BREW is a thin software environment – Very small program that resides on a wireless device • Capable ... frequency channels • Supports 144 Kbps packet data transmission 2 Objectives • Describe wireless wide area networks (WWANs) and how they are used • Describe the applications that can be used on ... 24-hour period 30 Satellite Transmissions (continued) 26 Satellite Broadband Wireless • Use of satellites for personal wireless communication is fairly recent • Satellite use falls into three broad...
Ngày tải lên: 13/09/2012, 10:52
LÝ THUYẾT VỀ MẠNG LAN (LOCAL AREA NETWORK)
... nhất được nhận dạng bởi thiết bị hai đầu. 5.4 CÔNG NGHỆ VLAN: VLAN là viết tắt của Virtual Local Area Network hay còn gọi là mạng LAN ảo. Một VLAN được định nghĩa là một nhóm logic các thiết bị ... hình native VLAN thì phải cấu hình ở giao diện vật lý. CHƯƠNG II LÝ THUYẾT VỀ MẠNG WAN (WIDE AREA NETWORK) I. KHÁI NIỆM : Là mạng được thiết lập để liên kết các máy tính của hai hay nhiều khu ... trí rất xa nhau, ví dụ như những quốc gia khác nhau, thì khi đó ta có mạng diện rộng WAN(Wide Area Network) Trang NGUYỄN ĐÌNH CÔNG – 36CLTH 2929 V./. CÁC CÔNG NGHỆ MẠNG LAN : 5.1. CÔNG NGHỆ CHUYỂN...
Ngày tải lên: 25/04/2013, 11:58
Personal Area Networks (PANs)
... and Heile R. F. Paving the Way for Personal Area Network Standards: an Overview of the IEEE P802.15 Working Group for Wireless Personal Area Networks, IEEE Personal Commu- nications, February, ... A-nodes are mobile personal computers and Personal Digital Assistants (PDAs). Wireless Networks316 Figure 11.14 Main differences between HomeRF versions 1.2 and 2.0 11 Personal Area Networks (PANs) 11.1 ... Distributed Topology Construction for Bluetooth Personal Area Networks, in Proceedings of IEEE INFOCOM, 2001, pp. 1577–1586. [13] The HomeRF Working Group, Wireless Networking Choices for the Broadband...
Ngày tải lên: 29/09/2013, 21:20
Wireless Local Area Networks
... improve- ments. 9.7 Summary In this chapter we cover the area of Wireless Local Area Networks by focusing on a number of issues: † WLAN topologies. The two types of wireless LAN topologies used today are the ... Local Access: Wireless LAN and Wireless ATM, IEEE Commu- nications Magazine, November, 1997, 34–40. [15] Geier J. Wireless LANs, Implementing Interoperable Networks, Macmillan Network Architecture ... Control Protocol for Wireless Data Networks, in Proceedings of IEEE GLOBECOM, 1993, pp. 1713–1717. [9] Chen K C. and Lee C H. Group Randomly Access Polling for Wireless Data Networks, in Proceedings...
Ngày tải lên: 29/09/2013, 21:20
Tài liệu PERSONAL DETAILED FORM ppt
... complete. Applicant's signature Applicant's name Date 3 PERSONAL DETAILED FORM Application for: Team Leader Emp. Code: TeamLeader I .PERSONAL DETAILS Full Name: DOB (dd/mm/yyyy) POB ID Number...
Ngày tải lên: 09/12/2013, 15:15