IEEE 802.11 WIRELESS
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This document summarizes a seminar presentation on Wi-Fi technology. It discusses the Wi-Fi protocol stack including the physical, MAC and network layers. It describes Wi-Fi network topologies like infrastructure and ad-hoc modes. It covers configurations, applications and security aspects of Wi-Fi including early protocols like WEP. It also lists advantages like mobility and disadvantages like interference of Wi-Fi wireless networks.
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This document analyzes the performance of 802.11 wireless LANs. It summarizes methods for calculating throughput and delay. Throughput is determined by the conditional collision probability, which depends on the number of contending nodes. Delay is modeled using a generalized state transition diagram and Mason's formula to determine MAC layer service time as a function of the number of saturated nodes. The analysis considers both non-saturated and saturated network conditions to understand optimal and maximum throughput.
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Hamdard University Bangladesh provides an introduction to IEEE 802.11 wireless LAN specifications. It defines two types of MAC sublayer services and describes the distribution coordination function which allows stations to transmit if the medium is idle or wait until the current transmission is complete if busy. It also discusses the point coordination function implemented in infrastructure networks which uses repetition intervals for contention-free transmissions.
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This document summarizes key aspects of IEEE 802.11 wireless LANs. It describes wireless LAN characteristics like infrastructure-based and ad-hoc networks. It discusses components like stations, access points, and service sets. It covers protocols like CSMA/CA and RTS/CTS for medium access control. It also discusses power management, roaming, and scanning functions important for wireless mobility.
802.11 Wireless LAN Vulnerability Assessment (ITSPSR-21A)
This document provides an overview and assessment of vulnerabilities in 802.11 wireless LAN (WLAN) technology. It describes the WLAN standards and security mechanisms such as Wired Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA/WPA2). While WPA2 provides strong security, vulnerabilities still exist if security features are not properly enabled. The document recommends mandatory use of WPA2 with 802.1X authentication for all government WLANs and additional security measures like encryption for especially sensitive networks.
WiFi 802.11
This document discusses Wi-Fi (IEEE 802.11) standards. It describes the six physical layer standards used in Wi-Fi networking and their key characteristics. It also discusses Wi-Fi frame formats and how Wi-Fi networks use carrier sense multiple access with collision avoidance (CSMA/CA) to prevent collisions between transmitting nodes.
WLAN - IEEE 802.11
The document provides information about the IEEE 802.11 WLAN standard and its various layers:
- The PHY layer includes the physical layer convergence protocol and physical medium dependent sublayers. The PHY layer supports FHSS, DSSS and infrared spread spectrum techniques.
- The MAC layer supports distributed coordination function based on CSMA/CA and RTS/CTS, as well as point coordination function controlled by an access point. It defines frame formats and medium access mechanisms.
IEEE 802.11
This document provides an introduction to the IEEE 802.11 wireless LAN standard. It outlines the standard's architecture including components like stations, basic service sets, extended service sets, and access points. It describes the medium access control sublayer which uses distributed coordination function and point coordination function to provide reliable data delivery and fair medium sharing. It also briefly discusses the physical layer and typical wireless LAN products.
ieee protocols 802.11
The document provides an introduction to IEEE 802.11 protocols, including the different IEEE 802.11 standards. It discusses the OSI layers covered in IEEE 802.11, including the physical and data link layers. It then summarizes several IEEE 802.11 standards including 802.11b, 802.11a, 802.11g, 802.11n, and 802.11ad, noting their key features such as frequency bands, maximum speeds, ranges, and release years. The document concludes with a summary that 802.11ad significantly improves throughput and range compared to older standards, is the only standard that operates in 60GHz and 2.4GHz bands, and was the
IEEE Standards
The document discusses IEEE standards for local area networks (LANs) including Ethernet LANs, Token Ring LANs, and wireless LANs. It describes the IEEE 802 standards family, common LAN topologies and cabling, how CSMA/CD and token protocols work, and comparisons of Ethernet and Token Ring technologies. It also outlines wireless LAN specifications including 802.11, 802.11a, 802.11b, and 802.11g.
W-LAN (Wireless Local Area Network)
Wireless local area networks (WLANs) use radio waves to connect devices in a building or campus wirelessly. They integrate with wired networks through access points that bridge wireless and wired traffic. WLANs operate similarly to wired LANs but have some differences like lower security, limited bandwidth, and variable performance depending on location within the network coverage area. Common devices that use WLANs include tablets, smartphones and laptops.
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802.11 Wireless LAN Vulnerability Assessment (ITSPSR-21A)
802.11 Wireless LAN Vulnerability Assessment (ITSPSR-21A)