... 8-PSKCDMA2000 1xRTTãOperates on two 1.25 MHz -wide frequency channelsãSupports 144 Kbps packet data transmission 2ObjectivesãDescribe wirelesswidearea networks (WWANs) and how they are usedãDescribe ... 1xEVDOãFor 2.5G CDMA2000 1xRTT networks 25Binary Runtime Environment for Wireless (BREW)ãBREW is a thin software environmentVery small program that resides on a wireless device ãCapable ... (continued)ãShort Message Services (SMS)One of the most widely used applications–Allows for the delivery of short, text-based messages between wireless devicesãMessages are limited to about 160...
... using SIRãThen they shift to FIR speed Wireless CommunicationsLow Rate Wireless Personal Area Networks 2ObjectivesãDescribe a wireless personal areanetwork (WPAN)ãList the different WPAN ... workãDescribe the security features of low-rate WPAN technology 3What is a WPAN?ã Wireless personal areanetwork (WPAN)Group of technologies that are designed for short-range communications–Eliminates ... devicesãIncludeBluetooth802.15.4 (ZigBee) 12Bluetooth Protocol Stack (continued) 14Bluetooth Protocol Stack (continued)ã Network topologies (continued)ScatternetãGroup of piconets in which connections exist between...
... 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)ãAllows new ... corrected–Also called error correction (FEC) Wireless# Guide to Wireless Communications 26Mesh Networking (802.15.5) (continued) Wireless# Guide to Wireless Communications 28How UWB WorksãUWB ... and storage Wireless# Guide to Wireless Communications 32How UWB Works (continued) Wireless# Guide to Wireless Communications 18Additional MAC Layer Functionality (continued) Wireless CommunicationsChapter...
... wired network interface portãAP functions Wireless communications base stationBridge between the wireless and wired networks 6 Wireless Network Interface Card (continued) 5 Wireless Network ... of wireless clients and an APãExtended Service Set (ESS)Two or more BSS wireless networks installed in same area –Provides users with uninterrupted mobile access to the network ãAll wireless ... communicate among themselves Wireless Communications Wireless Local Area Networks 4WLAN ComponentsãMinimal hardware needed for a WLANComputerISP Wireless network interface cardAccess...
... a WMAN?ã Wireless metropolitan area networks (WMANs)Provide wireless connectivity across a substantial geographical area such as a large cityãWMANs primary goalsExtend wired networks beyond ... Wireless Communications Wireless Metropolitan Area Networks 14Multichannel Multipoint Distribution Service (MMDS)ãMultichannel multipoint distribution service (MMDS) Fixed broadband wireless ... same network ãWiMAX MAC layer makes it easy for carriers to deploy the network ãRange of a WiMAX network is measured in milesãCellular phone operators can easily incorporate WiMAX networks...
... cấu 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 – 36CLTH2929 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 AreaNetwork hay còn gọi là mạng LAN ảo. Một VLAN được định nghĩa là một nhóm logic các thiết bị...
... hết sức quan trọng. Giải pháp mạng WAN ( WideAreaNetwork - Mạng diện rộng ) được áp dụng. Chúng có nhiệm vụ kết hợp tất cả các mạng LAN (Local AreaNetwork ) 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...
... 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 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 ... summarizedbelow:†Throughput. Although this is a general requirement for every network, it is an even more Wireless Local Area Networks 245Figure 9.5 Example of frequency reuse ẵ221IÊ ranfị Ê Slot_time, where...
... Telephony (SRST). ãApplication 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 49Enterprise Branch WideArea ... NME-WAE-302NME-WAE-502 Network moduleWAAS network modules cannot be configured as a WAAS CM.Supported on the 2800 and 3800 ISR routers. Network management NM-NAM Network moduleTable 4...
... supports the storage areanetwork (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 USAEnterprise Data Center WideArea Application Services (WAAS) Design GuideThis document offers guidelines and best practices for implementing WideArea Application Services (WAAS) ... End Network 12Core Layer 13Aggregation Layer 13Access Layer 13Back-End Network 14SAN Core Layer 14SAN Edge Layer 15WAN Edge Component 15 19Enterprise Data Center Wide Area...
... FTPPackets are:Marked (colored) at ingress at network edge IP Precedence / Differentiated Services Code Point (DSCP) setPoliced and shaped at the network edgePotentially discarded by Weighted ... matching traffic pattern, for example, 25Kbps of traffic to “Bronze”San JoseOttawaCAR Bandwidth ManagementCAR Bandwidth ManagementToday, 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...