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wireless body area network powerpoint

Low Rate Wireless Personal Area Networks

Low Rate Wireless Personal Area Networks

Kỹ thuật lập trình

... using SIR•Then they shift to FIR speed Wireless CommunicationsLow Rate Wireless Personal Area Networks2Objectives•Describe a wireless personal area network (WPAN)•List the different WPAN ... 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 ... devices•Include–Bluetooth–802.15.4 (ZigBee)12Bluetooth Protocol Stack (continued)14Bluetooth Protocol Stack (continued)• Network topologies (continued)–Scatternet•Group of piconets in which connections exist between...
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High Rate Wireless Personal Area Networks

High Rate Wireless Personal Area Networks

Kĩ thuật Viễn thông

... corrected–Also called error correction (FEC) Wireless# Guide to Wireless Communications 26Mesh Networking (802.15.5) (continued) Wireless# Guide to Wireless Communications 28How UWB Works•UWB ... are present in the same order in every frame Wireless# Guide to Wireless Communications 15802.15.3 Network Topology (continued) Wireless# Guide to Wireless Communications 27Ultra Wide Band (UWB)•Allows ... and storage Wireless# Guide to Wireless Communications 32How UWB Works (continued) Wireless# Guide to Wireless Communications 18Additional MAC Layer Functionality (continued) Wireless CommunicationsChapter...
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Wireless Local Area Networks

Wireless Local Area Networks

Kỹ thuật lập trình

... wired network interface port•AP functions– Wireless communications base station–Bridge between the wireless and wired networks6 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 Networks4WLAN Components•Minimal hardware needed for a WLAN–Computer–ISP– Wireless network interface card–Access...
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Wireless Metropolitan Area Networks

Wireless Metropolitan Area Networks

Kĩ thuật Viễn thông

... 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 Networks14Multichannel 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 networks3What...
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Describe wireless wide area networks (WWANs) and how they are used

Describe wireless wide area networks (WWANs) and how they are used

Kĩ thuật Viễn thông

... 1xEVDO•For 2.5G CDMA2000 1xRTT networks25Binary 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 transmission2Objectives•Describe wireless wide area networks (WWANs) and how they are used•Describe the applications that can be used on ... technologies162.5 Generation Cellular Telephony (continued)•2.5G network technologies–General Packet Radio Service (GPRS)•For TDMA or GSM 2G networks•Uses eight time slots in a 200 KHz spectrum and...
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LÝ THUYẾT VỀ MẠNG LAN (LOCAL AREA NETWORK)

LÝ THUYẾT VỀ MẠNG LAN (LOCAL AREA NETWORK)

Công nghệ thông tin

... 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 IILÝ THUYẾT VỀ MẠNGWAN (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) TrangNGUYỄN ĐÌNH CÔNG – 36CLTH2929V./. CÁC CÔNG NGHỆ MẠNG LAN :5.1. CÔNG NGHỆ CHUYỂN...
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Wireless Local Area Networks

Wireless Local Area Networks

Kỹ thuật lập trình

... improve-ments.9.7 SummaryIn this chapter we cover the area of Wireless Local Area Networks by focusing on a numberof 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, inProceedings 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...
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Chapter 13 :Local Area Network Technology potx

Chapter 13 :Local Area Network Technology potx

Cơ sở dữ liệu

... for 802.3) at 10Mbps❚50 ohm cable Wireless LANs❚Mobility❚Flexibility❚Hard to wire areas❚Reduced cost of wireless systems❚Improved performance of wireless systems William StallingsData ... performance of wireless systems William StallingsData and Computer CommunicationsChapter 13Local Area Network Technology LLC Protocol❚Modeled after HDLC❚Asynchronous balanced mode to support ... constant❚Significant increase in maximum ring size Wireless LAN Applications❚LAN Extension❚Cross building interconnection❚Nomadic access❚Ad hoc networks...
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BACnet Wide Area Network Security Threat Assessment ppt

BACnet Wide Area Network Security Threat Assessment ppt

An ninh - Bảo mật

... 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...
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CAN Controller Area Network docx

CAN Controller Area Network docx

Quản trị mạng

... nodes)(2drvcmpbusproptttt10/14/20122810/14/20123010/14/20121CAN Controller Area Network 10/14/201233Given:• CPU oscillator frequency = 32 MHz• Bit rate = 800 Kbps• Prescaler= ... transmission of a message, a maximum of five consecutive bits may have the same polarity.• The bit-stuff area in a CAN bus frame includes the SOF, Arbitration field, Control field, Data field and CRC...
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wireless personal area networks - performance, interconnection, & security with ieee 802.15.4

wireless personal area networks - performance, interconnection, & security with ieee 802.15.4

An ninh - Bảo mật

... protocol (O’Hara and Petrick 1999) is, strictly speaking, intended for wireless local area networks (LANs), rather than wireless ad hoc networks. However, itis interesting to examine it in some detail, ... 292A.3 Network Topologies and Routing 293A.4 Security 295Appendix B Probability Generating Functions and Laplace Transforms 301Bibliography 302Index 31110 PROLOGUE: WIRELESS PERSONAL AREA NETWORKS1.4.2 ... constraints which guide the design anddeployment of wireless sensor networks differ, sometimes substantially, from those thathold in wireless ad hoc networks (Achir and Ouvry 2004; Sohrabi et al....
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Thiết lập và định cấu hình cho một mạng LAN (Local Area Network) potx

Thiết lập và định cấu hình cho một mạng LAN (Local Area Network) potx

Quản trị mạng

... Thiết lập và định cấu hình cho một mạng LAN (Local Area Network) Thiết lập mạng: Lắp card mạng: ban đầu bạn phải lắp card mạng vào máy tính bằng cách: ... TCP/IP cho từng máy (đối với Win 9x) bạn bạn tiến hành: Vào My computer > Control Panel > Network > nếu tại đây bạn đã thấy có giao thức TCP/IP rồi thì bạn khỏi cần add thêm nếu chưa ... nên thiết lập gán IP theo dạng tĩnh. Ðể thực hiện bạn vào My computer > Control Panel > Network > nếu tại đây bạn đã thấy có giao thức TCP/IP rồi thì bạn khỏi cần add thêm nếu chưa...
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