wlan ieee 802.11 mac
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Performance Analysis of QoS Supported by Enhanced Distributed Channel Access (EDCA) Mechanism in IEEE 802.11e
White Paper This paper evaluates the capability of QoS support in Enhanced Distributed Channel Access (EDCA) mechanism of the IEEE 802.11e standard, which is the Medium Access Control (MAC) enhancements for QoS support in 802.11.EDCA mechanism allow... [18 Jul 2008]
Impact of 802.11e EDCA on Mixed TCP-Based Applications
White Paper Recent work has shown that the widely-deployed IEEE 802.11 MAC Distributed Coordination Function (DCF) is biased against downstream flows. It is difficult to optimally con-figure WLAN components, such as access points (APs), to meet the quality-of... [08 Jan 2008]
Comparison of Modified Dual Queue and EDCA for VoIP Over IEEE 802.11 WLAN
White Paper The popular IEEE 802.11 WLAN today does not provide any Quality-of-Service (QoS) because of its contention-based channel access nature of the Medium Access Control (MAC). The dual queue scheme operates on top of the legacy MAC. [19 Dec 2007]
Performance of Reliable Transport Protocol Over IEEE 802.11 Wireless LAN: Analysis and Enhancement
White Paper The basis of the IEEE 802.11 WLAN MAC protocol is Distributed Coordination Function(DCF), which is a Carrier Sense Multiple Access with Collision Avoidance(CSMA/CA) with binary slotted exponential back-off scheme. [05 Dec 2007]
Evaluation of a Novel Low Complexity Smart Antenna for Wireless LAN Systems
White Paper A novel smart antenna is described, which is conceived as a low complexity inexpensive upgrade for IEEE 802.11b/g Wireless Local Area Network (WLAN) systems. Using smart antennas to increase network throughput by improved spatial reuse is not... [05 Dec 2007]
User-Level Performance in WLAN Hotspots
White Paper The paper first provide a packet level analysis that accounts not only for the interaction between TCP and the IEEE 802.11 MAC protocol, but also for the different radio conditions experienced by various users. [05 Dec 2007]
Performance Evaluation of a Feedback Based Dynamic Scheduler for 802.11e MAC
White Paper To overcome this limitation, the 802.11e working group has recently proposed the Hybrid Coordination Function (HCF), which is an enhanced access method that allows service differentiation within WLAN's. [03 Sep 2007]
Mobile Wireless System Interworking With 3G and Packet Aggregation for Wireless LAN
White Paper The enhancement to IEEE 802.11, AGG-MAC yields dramatic improvements in both local and global throughput. The research discussed in this paper considered the efficient transmission of data within a Wireless Local Area Network (WLAN) system. [31 Aug 2007]
Performance Evaluation of a Feedback Based Dynamic Scheduler for 802.11e MAC
White Paper To overcome this limitation, the 802.11e working group has recently proposed the Hybrid Coordination Function (HCF), which is an enhanced access method that allows service differentiation within WLAN's. [13 Aug 2007]
Controlling TCP Fairness in WLAN Access Networks
White Paper This paper studies the problem of maintaining fairness for TCP connections in wireless local area networks (WLANs) based upon the IEEE 802.11 standard. They do not require modifying existing standards at the MAC or network layers. [09 Jul 2007]
Throughput and QoS Optimization in IEEE 802.11 WLAN
White Paper In a Wireless LAN (WLAN) based on IEEE 802.11, supporting multiple classes of services with QoS constraints in MAC layer is very important. Through investigating the relationship between access control parameters, such as Contention Window (CW... [11 May 2007]
Performance Study of MAC for Service Differentiation in IEEE 802.11
White Paper This paper investigates the MAC layer performance of IEEE 802.11e based WLAN, where the traffic flows are classified and each class is assigned different MAC parameters, such as Inter-Frame Space (IFS), and Contention Window (CW) size. [11 May 2007]
A "Smart" MAC-Routing Protocol for WLAN Mesh Networks
White Paper The IEEE 802.11s working group has centered the target of focusing on the MAC layer protocol, understanding how the current MAC procedures are insufficient to sustain a WLAN Mesh network and how functions typical of higher layers must be part of... [16 Feb 2006]
RT-WLAN: A Soft Real-Time Extension to the ORiNOCO Linux Device Driver
White Paper The current IEEE 802.11 Wireless LAN (WLAN) systems are unable to support real-time applications because the underlying contention-based MAC (Medium Access Control) protocol causes unpredictable delays. [09 Feb 2006]
Performance Analysis of an Enhanced IEEE 802.11 Distributed Coordination Function Supporting Service Differentiation
White Paper Unfortunately, current WLAN standards like IEEE 802.11 Distributed Coordination Function (DCF) lack this ability. Work is in progress to define an enhanced version capable of supporting QoS for multimedia traffic at the MAC layer. [07 Feb 2006]
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