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ieee 802.11 protocol

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Improving Power Save Protocols Using Carrier Sensing for Dynamic Advertisement Windows: Energy efficient protocols are important in ad hoc networks since battery life for wireless devices is limited. The IEEE 802.11 protocol specifies a simple power save mechanism PSM to conserve energy. Packets are advertised for a fixed length of time, known as an advertisement window, at epochs known as beacon...; Tags: University Of Illinois, Advertisement, Window, Protocol, Microsoft Windows, Carrier, IEEE 802.11 Protocol, Construction, Wireless LANs, Wi-Fi, Wireless; White papers 2005-08-19

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IEEE 802.11b: IEEE 802.11 specifies a 2.4 GHz operating frequency with data rates of 1 and 2 Mbps using either Direct Sequence Spread Spectrum DSSS or Frequency Hopping Spread Spectrum FHSS. This white paper starts with introduction to IEEE 802.11b and then describes CCK used in IEEE 802.11b, Walsh and Complementary Codes...; Tags: IEEE 802.11, Wireless LANs, Wi-Fi, Wireless; White papers 2003-10-23
Mitigating the Exposed Node Problem in IEEE 802.11 Ad Hoc Networks: The IEEE 802.11 Distributed Coordination Function DCF MAC protocol continues to suffer from the hidden and exposed node problems which characterize CSMA-based protocols. The RTS/CTS exchange partially solves the hidden node problem, but the exposed node problem remains unaddressed. This paper describes enhancements to the IEEE 802.11 DCF MAC Protocol...; Tags: IEEE 802.11, Node Problem, IEEE 802.11 Distributed Coordination Function MAC Protocol, Wireless LANs, Wi-Fi, Wireless; White papers
IEEE 802.1X in Secure Wireless Networking: Applying the IEEE 802.1X protocol to wireless networking in conjunction with 802.11 dramatically simplifies the management of secure wireless LANs. The IEEE 802.1X protocol can also be used to manage policy-based bandwidth provisioning and VLAN support in conjunction with 802.11e. This paper examines and explores the current application of 802.1X...; Tags: Network, Wireless Networking, IEEE 802.1X, Wi-Fi, Wireless; White papers 2002-08-01
Towards the Performance Analysis of IEEE 802.11 in Multi-Hop Ad-Hoc Networks: The performance of IEEE 802.11 in multi-hop wireless networks depends on the characteristics of the protocol itself, and on those of the upper layer routing protocol. Extensive work has been done to analyze and evaluate the performance of single hop networks under saturated traffic conditions, either through simulations or mathematical...; Tags: Auburn University, IEEE 802.11, Performance, Network, Wireless LANs, Performance Management, Wi-Fi, Wireless, Networking, Human Resources, Workforce Management; White papers

Enhancements of the IEEE 802.11, a MAC Protocol for Ad Hoc Network With History of Power Adjustment: This paper proposes a MAC protocol which improves disadvantages of the IEEE 802.11 DCF standard, like the blocking problem, scheduling concurrent transmissions the hidden and exposed problem. The protocol also achieves better spatial reuse of the spectrum thanks to the power control taking into consideration the number of neighbors in...; Tags: IEEE 802.11, Advertisement, MAC, Protocol, Adjustment, Wireless LANs, Wi-Fi, Wireless; White papers 2005-05-01
Ad-Hoc Extensions to the 802.15.3 MAC Protocol: The paper describes the design and evaluation of Ad-Hoc extensions to the IEEE 802.15.3 Medium Access Control MAC layer for Wireless Personal Area Networks WPANs. The proposed protocol allows communication between ad-hoc devices without the intervention of any central entity and, at the same time, ensures bounded delays for isochronous...; Tags: IEEE 802.11, MAC, New Jersey, Protocol, IEEE, Wireless LANs, Wi-Fi, Wireless; White papers 2005-03-08
Enhanced Power Saving for IEEE 802.11 WLAN With Dynamic Slot Allocation: In the area of wireless mobile communication, minimizing energy consumption as well as maximizing data throughput in Medium Access Control MAC layer is a very important research issue. The Distributed Coordination Function DCF of IEEE 802.11 provides the Power Saving Mechanism PSM that allows nodes to remain silent in 'Doze...; Tags: IEEE 802.11, Allocation, Springer Science+Business Media, Energy Consumption, Wireless LANs, Wi-Fi, Wireless; White papers 2005-10-23
Introduction to IEEE 802.11: In 1997 the IEEE adopted IEEE Std. 802.11-1997, the first wireless LAN WLAN standard. This standard defines the media access control MAC and physical PHY layers for a LAN with wireless connectivity. It addresses local area networking where the connected devices communicate over the air to other devices that are...; Tags: IEEE 802.11, WLAN, IEEE, Wireless LANs, LANs, Wi-Fi, Wireless, Networking; White papers
Numerical Analysis of IEEE 802.11 Broadcast Scheme in Multihop Wireless Ad Hoc Networks: This paper presents a study of the performance of IEEE 802.11 broadcast scheme in multihop wireless networks using an analytical model. Previous works have evaluated the performance of IEEE 802.11 protocol assuming unicast communication, but there has not been an analysis considering broadcast communication. Analyzing performance of broadcast communication is...; Tags: IEEE 802.11, Performance, Communication, Springer Science+Business Media, Analysis, Wireless LANs, Wi-Fi, Wireless, Performance Management, Human Resources, Workforce Management; White papers 2005-01-28
Performance Analysis of Contention Based Medium Access Control Protocols: This paper studies the performance of contention based Medium Access Control MAC protocols. This paper provides a simple and accurate method for estimating the throughput of IEEE 802.11 DCF and IEEE 802.11e EDCA. The method is based on a rigorous analysis of the Markov chain associated with the back-off process...; Tags: Method, Contention, IEEE 802.11, MAC, Performance, Protocol, Wireless LANs, Wi-Fi, Wireless; White papers 2006-01-02
Voice Over Wireless LAN Via IEEE 802.16 Wireless MAN and IEEE 802.11 Wireless Distribution System: IEEE 802.16 Wireless MANs WMAN aims to extend the wireless broadband access up to kilometers to facilitate the long-range 'last-mile' Solution. For short-range extension, IEEE 802.11 Wireless Distribution System WDS can be set up easily by connecting Access Points AP together to form multi-hop networks. This provides a quick, easy...; Tags: IEEE 802.11, Voice, WLAN, IEEE 802.16, WiMAX, Wireless LANs, Wireless, Wi-Fi, LANs, Networking; White papers 2005-05-01
Evaluation of Quality of Service Schemes for IEEE 802.11 Wireless LANs: This paper evaluates four mechanisms for providing service differentiation in IEEE 802.11 wireless LANs, the Point Coordinator Function PCF of IEEE 802.11, the Enhanced Distributed Coordinator Function EDCF of the proposed IEEE 802.11e extension to IEEE 802.11, Distributed Fair Scheduling DFS, and Blackburst using the ns-2 simulator. The metrics used...; Tags: IEEE 802.11, QoS, Point Coordinator Function Performance, Wireless LANs, Wi-Fi, Wireless; White papers
802.11n: The Next Generation of Wireless Performance: The IEEE 802.11 Working Group has been working for the last few years to standardize an upgrade to the 802.11 radio that provides a new set of capabilities dramatically improving the reliability of 802.11 communications, the predictability of 802.11 coverage, and the overall throughput of 802.11 devices. This paper describes...; Tags: IEEE 802.11, IEEE 802.11n, IEEE 802.11 Working Group, Wireless LANs, Wi-Fi, Wireless; White papers 2007-08-01
Performance of Wireless LANs Based on IEEE 802.11 MAC Protocols: IEEE 802.11 MAC protocol has been the standard for Wireless LANs, and also adopted in many network simulation packages for wireless multi-hop ad hoc networks. However, it is well known that, as the traffic goes up, the performance of IEEE 802.11 MAC drops dramatically in terms of delay and throughput,...; Tags: IEEE 802.11, Performance, University Of Florida, WLAN, IEEE 802.11 MAC Protocol, Wireless LANs, Wi-Fi, Wireless, LANs, Networking; White papers 2004-02-28
How Well Can the IEEE 802.11 Wireless LAN Support Quality of Service?: This paper studies an important problem in the IEEE 802.11 Distributed Coordination Function DCF-based Wireless Local Area Network WLAN: how well can the network support Quality of Service QoS. Specifically, this paper analyzes the network's performance in terms of maximum protocol capacity or throughput, delay, and packet loss rate. Although...; Tags: IEEE 802.11, QoS, Network, IEEE, Wireless LANs, Wi-Fi, Wireless; White papers 2005-11-01
How to Outperform IEEE 802.11: Interference Aware (IA) MAC: Wireless networks are nowadays very popular. They are mostly based on IEEE 802.11 protocol which is known to show low performance in ad hoc networks. Also when infrastructured networks many access points are placed are considered, a single transmission could block many radio cells. This paper proposes Interference Aware IA...; Tags: IEEE 802.11, Network, Transmission, University Of California, Idea, Wireless LANs, Wi-Fi, Wireless, Networking; White papers
Wireless Deployment Recommendations and Best Practices: IEEE 802.11 wireless LANs have the historical reputation of being unsafe. While that may have been true for the original 802.11 standard, the latest developments in wireless standards such as IEEE 802.1X, Wi-Fi Protected Access WPA, and Wi-Fi Protected Access 2 (WPA2) provide strong protection for wireless traffic in the...; Tags: IEEE 802.11, Best Practice, Wi-Fi, Wireless, Wireless LANs; White papers 2005-08-03
Track and protect your data flow with the 802.11 Protocol Map: Finding your way through the complicated maze of the 802.11 protocol can be a daunting task. This download of Matthew Gast's 802.11 Protocol Map guides you through it safely. As with any international standard developed by an organization with as diverse a membership as the Institute of...; Tags: IEEE 802.11, Matthew Gast, Wireless LANs, Wi-Fi, Wireless; Download resources 2005-08-16
Performance Study of IEEE 802.15.4 Using Measurements and Simulations: IEEE 802.15.4 was developed to meet the needs for simple, low-power and low-cost wireless communication. In the past couple of years it has become a popular technology for wireless sensor networks. It operates primarily in the 2.4GHz ISM band, which makes the technology easily applicable and worldwide available. However, IEEE...; Tags: Performance, IEEE, Wi-Fi, Wireless; White papers 2005-09-13

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