wlan 802.11e
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A Performance Comparison of QoS Approaches for Ad Hoc Networks: 802.11e Versus Distributed Resource Allocation
White Paper This paper compares two approaches for Quality of Service support in WLAN-based ad hoc networks. The first approach is to use per-packet priorities, according to the IEEE 802.11e standard. The second... [04 Aug 2008]
An Adaptive Multimedia QoS Scheduler for 802.11e Wireless LANs
White Paper The IEEE 802.11e standard defines the Hybrid Coordination Function (HCF) which species the QoS algorithms in the MAC layer of the next generation 802.11 Wireless LAN (WLAN). The HCF is composed of two... [04 Aug 2008]
Filling the Gaps in Order to Offer QoS Guarantees in IEEE 802.11 WLANs
White Paper Current IEEE 802.11 standards are not capable of offering Quality-of-Service (QoS) guarantees to WLAN users. This is mainly due to some gaps existing in their MAC protocol. Even the QoS features of the new extension,... [04 Aug 2008]
Performance Analysis of QoS Supported by Enhanced Distributed Channel Access (EDCA) Mechanism in IEEE 802.11e
White Paper With fast deployment of Wireless Local Area Networks (WLANs), the ability of WLAN to support real time services with stringent Quality of Service (QoS) requirements has come into fore. This paper evaluates the capability... [18 Jul 2008]
Impact of 802.11e EDCA on Mixed TCP-Based Applications
White Paper It is difficult to optimally con-figure WLAN components, such as access points (APs), to meet the quality-of-service requirements of the different applications, as well as ensuring flow-level fairness. [09 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). Therefore, this paper proposes a simple software... [20 Dec 2007]
TCP Dynamics Over IEEE 802.11e WLANs: Modeling and Throughput Enhancement
White Paper Today, IEEE 802.11 Wireless LAN (WLAN) has become a prevailing solution for broadband wireless Internet access while Transport Control Protocol (TCP) is the dominant transport protocol in the Internet. [20 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]
Feedback Based Bandwidth Allocation With Call Admission Control for Providing Delay Guarantees in IEEE 802.11e Networks
White Paper In particular, the 802.11e proposal introduces; the Hybrid Coordination Function (HCF), which is an improved channel access method aimed at allocating the first-hop WLAN bandwidth to delay-insensitive... [31 Aug 2007]
Performance Study of MAC for Service Differentiation in IEEE 802.11
White Paper In a Wireless Local Area Network (WLAN), Medium Access Control (MAC) layer access parameters are usually differentiated for various classes of users to provide different Quality of Service (QoS). This paper investigates... [11 May 2007]
Performance of VoIP Over IEEE 802.11g DSSS-OFDM Mode With IEEE 802.11e QoS Support
White Paper This paper involves a study of the number of simultaneous bidirectional G.711 VoIP calls that can be supported by such a WLAN. This paper examines, via simulation, the performance of an 802.11e MAC over... [11 Apr 2007]
Capacity Evaluation of VoIP in IEEE 802.11e WLAN Environment
White Paper Wireless VoIP, typically over 802.11 WLAN, is becoming increasingly popular, but even further elevates the challenges of delay and loss reduction. These motivations lead to study the VoIP capacity in IEEE... [24 May 2006]
Performance Analysis and Enhancements for IEEE 802.11e Wireless Networks
White Paper The IEEE 802.11 WLAN legacy standard cannot provide QoS support for multimedia applications. Thus, considerable research efforts have been carried out to enhance QoS support for 802.11. Among them,... [24 May 2006]
Fairness and Capacity Trade-Off in IEEE 802.11 WLANs
White Paper This paper investigates the issue of fairness in a heterogeneous environment in which stations in a Wireless Local Area Network (WLAN) experience unequal signal qualities due to location and interference factors. [24 May 2006]
Bandwidth Estimation and Robust Video Streaming Over 802.11e Wireless LANs
White Paper Streaming high quality Audio/Video (AV) from home media sources to TV sets over a Wireless Local Area Network (WLAN) is a challenging problem because of the fluctuating bandwidth caused by interference. [12 May 2006]
