wireless wide area network example
Describe wireless wide area networks (WWANs) and how they are used
... 8-PSK CDMA2000 1xRTT ã Operates on two 1.25 MHz -wide frequency channels ã Supports 144 Kbps packet data transmission 2 Objectives ã Describe wireless wide area networks (WWANs) and how they are used ã Describe ... 1xEVDO ã For 2.5G CDMA2000 1xRTT networks 25 Binary Runtime Environment for Wireless (BREW) ã BREW is a thin software environment Very small program that resides on a wireless device ã Capable ... (continued) ã Short Message Services (SMS) One of the most widely used applications – Allows for the delivery of short, text-based messages between wireless devices ã Messages are limited to about 160...
Ngày tải lên: 13/09/2012, 10:52
Đồ án tốt nghiệp chọn đường và ứng dụng trong thiết kế mạng wide area network WAN
Ngày tải lên: 04/04/2014, 07:36
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
Low Rate Wireless Personal Area Networks
... using SIR ã Then they shift to FIR speed Wireless Communications Low Rate Wireless Personal Area Networks 2 Objectives ã Describe a wireless personal area network (WPAN) ã List the different WPAN ... work ã Describe the security features of low-rate WPAN technology 3 What is a WPAN? ã Wireless personal area network (WPAN) Group of technologies that are designed for short- range communications – Eliminates ... devices ã Include Bluetooth 802.15.4 (ZigBee) 12 Bluetooth Protocol Stack (continued) 14 Bluetooth Protocol Stack (continued) ã Network topologies (continued) Scatternet ã Group of piconets in which connections exist between...
Ngày tải lên: 13/09/2012, 10:52
High Rate Wireless Personal Area Networks
... 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) ã Allows new ... 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 ã UWB ... 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 Local Area Networks
... wired network interface port ã 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 ã Extended Service Set (ESS) Two or more BSS wireless networks installed in same area – Provides users with uninterrupted mobile access to the network ã All wireless ... communicate among themselves Wireless Communications Wireless Local Area Networks 4 WLAN Components ã 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
... a WMAN? ã Wireless metropolitan area networks (WMANs) Provide wireless connectivity across a substantial geographical area such as a large city ã WMANs primary goals Extend wired networks beyond ... Wireless Communications Wireless Metropolitan Area Networks 14 Multichannel Multipoint Distribution Service (MMDS) ã Multichannel multipoint distribution service (MMDS) Fixed broadband wireless ... same network ã WiMAX MAC layer makes it easy for carriers to deploy the network ã Range of a WiMAX network is measured in miles ã Cellular phone operators can easily incorporate WiMAX networks ...
Ngày tải lên: 13/09/2012, 10:52
LÝ THUYẾT VỀ MẠNG LAN (LOCAL AREA NETWORK)
... cấu 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 ... 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...
Ngày tải lên: 25/04/2013, 11:58
Tổng quan về mạng WAN (Wide Area Netwwork) - Phần mềm Cool Chat
... hết sức quan trọng. Giải pháp mạng WAN ( Wide Area Network - Mạng diện rộng ) được áp dụng. Chúng có nhiệm vụ kết hợp tất cả các mạng LAN (Local Area Network ) ở xa lại thành một mạng duy nhất ... có hiệu quả.Theo mô hình OSI (Open System Interconnect ) thì chức năng của router thuộc mức 3 ( Network ), cung cấp thiết bị với thông tin chứa trong các header của giao thức, giúp cho việc xử...
Ngày tải lên: 27/04/2013, 22:04
Wireless Local Area Networks
... P. Wideband 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 ... 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 ... summarized below: † Throughput. Although this is a general requirement for every network, it is an even more Wireless Local Area Networks 245 Figure 9.5 Example of frequency reuse ẵ2 21I Ê ranfị Ê Slot_time, where...
Ngày tải lên: 29/09/2013, 21:20
Tài liệu cisco migration_Enterprise Branch Wide Area Application docx
... Telephony (SRST). ã Application networking servicesWAE network module (NME-WAE-302, NME-WAE-502). ã Network management servicesThe Network Access Module (NM-NAM) offers network monitoring services ... the network path) or destination IP (service group 62 in the network path). The allocated hash buckets are synchronized within the service group, and the hash 49 Enterprise Branch Wide Area ... NME-WAE-302 NME-WAE-502 Network module WAAS network modules cannot be configured as a WAAS CM. Supported on the 2800 and 3800 ISR routers. Network management NM-NAM Network module Table 4...
Ngày tải lên: 10/12/2013, 16:15
Tài liệu Enterprise Data Center Wide Area Application Services (WAAS) Design Guide pptx
... supports the storage area network (SAN) fabric and connectivity between servers and other storage devices, such as storage arrays and tape drives. Front End Network The front-end network contains ... 95134-1706 USA Enterprise Data Center Wide Area Application Services (WAAS) Design Guide This document offers guidelines and best practices for implementing Wide Area Application Services (WAAS) ... End Network 12 Core Layer 13 Aggregation Layer 13 Access Layer 13 Back-End Network 14 SAN Core Layer 14 SAN Edge Layer 15 WAN Edge Component 15 19 Enterprise Data Center Wide Area...
Ngày tải lên: 10/12/2013, 16:16
Tài liệu Wide Area Networks doc
... FTP Packets are: Marked (colored) at ingress at network edge IP Precedence / Differentiated Services Code Point (DSCP) set Policed and shaped at the network edge Potentially discarded by Weighted ... matching traffic pattern, for example, 25Kbps of traffic to “Bronze” San Jose Ottawa CAR Bandwidth Management CAR Bandwidth Management Today, all the packets on the network look the same, and are ... be used to police precedence bits set externally to the network either by the customer or by a downstream service provider. Thus the network can decide to either accept or override external...
Ngày tải lên: 11/12/2013, 14:15