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wi-fi (802.11)
(2382 results)-
Case Studies
Keells Super Uses Motorola for Real-Time Inventory of Goods
Apr 2008
Keells Super is one of the largest super market chains in Sri Lanka. It is a subsidiary of John Keells Holdings PLC, a Sri Lankan blue chip conglomerate. In a single Keells Super store, there are...
Provided by Motorola
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White Papers
20 Myths of Wi-Fi Interference: Dispel Myths to Gain High-Performing and Reliable Wireless
Dec 2007
The growing ubiquity of wireless devices combined with the advent of mobility applications requires businesses to be diligent in managing inference throughout their deployments. The many wireless...
Provided by Cisco Systems
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White Papers
802.11n Design and Deployment Guidelines
Jan 2008
The industry has been excited about 802.11n from the day the suggestion was made that fast Ethernet speeds might be achievable in the world of Wi-Fi. Now, that standard is ready for mass...
Provided by Cisco Systems
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White Papers
The Next Generation of Wireless: 802.11n for the Business
Aug 2007
Businesses, users, and the communications industry as a whole have long anticipated the introduction of next-generation wireless networks enabled by the 802.11n standard. This new technology adds...
Provided by Cisco Systems
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White Papers
802.11n: Ready for Business
Mar 2008
Technology shifts are gradual events that generally take years. Now that 802.11n Draft 2.0 has become a de facto industry standard and the market is adopting 802.11n Draft 2.0 products in advance...
Provided by Cisco Systems
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Case Studies
Parking Meter Company Creates New Business Model With Wi-Fi
Dec 2007
Photo Violation Technologies wanted to encourage sales of high-tech parking meters to municipal customers and find a cost-effective alternative to cellular technology. The challenge was to gain...
Provided by Cisco Systems
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Case Studies
Pioneering University Deploys Canada's First 802.11n Wireless Network
Mar 2008
Concordia University wanted to keep up with a young, technology-savvy user base and continue to use the wireless network to add innovative applications and services both on and off campus. The...
Provided by Cisco Systems
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Case Studies
Teachers at a Paris School Gain Portable Solution for New WiFi-Enabled Campus
Nov 2007
At the American School of Paris (ASP), computing and IT have long been an integral part of the academic life of its 750 pupils. The school needed a robust notebook solution for teachers to access...
Provided by Dell
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White Papers
Performance Analysis of Broadcast Messages in VANETs Safety Applications
Jun 2010
Since IEEE 802.11p has been adopted as Vehicular Ad hoc NETworks (VANET) main technology, the research and development of vehicular safety applications has gained momentum. Because broadcasting is...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Q-HWMP: Improving End-to-End QoS for 802.11s Based Mesh Networks
Jun 2010
Wireless Mesh Network (WMNs) is an emerging technology, presented mainly as a way to build a multi-hop network based on an infrastructure. IEEE has developed a draft 802.11s describing the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Implementing Frequency Selective Fading for OPNET's Wireless LAN Modules
Jul 2008
In OFDM-based IEEE 802.11 Wireless LANs, adapting the modulation type per sub-carrier to the frequency selectivity of the wireless channel leads to significant performance improvements. To...
Provided by Aachen University
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White Papers
Collaborative Setting of RTS/CTS in Multi-Rate Multi-Cell IEEE 802.11 Wireless LANs
Sep 2008
Despite the fact that the Request-To-Send/Clear-To-Send (RTS/CTS) protocol significantly reduces collisions and retransmissions due to the hidden node problem, it is well known that it adds...
Provided by Technische Universität Berlin
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White Papers
An Optimal Station Association Policy for Multi-Rate IEEE802.11 Wireless LANs
Oct 2007
In Wireless Local Area Networks (WLANs) often a station can potentially associate with more than one Access Point (AP). In IEEE 802.11, the station simply associates to the AP from which it has...
Provided by Association for Computing Machinery
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White Papers
A Dual Distance Measurement Scheme for Indoor IEEE 802.11 Wireless Local Area Networks
Sep 2007
In this paper, the authors address the problem of distance measurement in indoor IEEE 802.11 WLANs. The Received Signal Strength Indicator (RSSI) and the Signal Propagation Time (SPT) have been...
Provided by Technische Universität Berlin
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White Papers
Dynamic Single-User OFDM Adaptation for IEEE 802.11 Systems
Oct 2007
Earlier paper have demonstrated that the achievable throughput of OFDM systems can benefit significantly from individual modulation/ transmit power selection on a per sub-carrier basis according...
Provided by Association for Computing Machinery
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White Papers
Hardware and Software Solutions for Wireless Mesh Network Testbeds
Jun 2008
Wireless mesh networks are currently emerging as a promising technology for broadband ubiquitous networking. Typical applications range from home broadband Internet access and community networking...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
WING/WORLD: An Open Experimental Toolkit for the Design and Deployment of IEEE 802.11-Based Wireless Mesh Networks Testbeds
Nov 2009
Wireless Mesh Networks represent an interesting instance of light-infrastructure wireless networks. Due to their flexibility and resiliency to network failures, wireless mesh networks are...
Provided by University of Trento
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White Papers
A Traffic Aggregation and Differentiation Scheme for Enhanced QoS in IEEE 802.11-Based Wireless Mesh Networks
Feb 2008
Wireless Mesh Networks are currently emerging as a promising paradigm for broadband ubiquitous Internet access. However, their distributed nature raises many challenges when facing the increasing...
Provided by Reed Elsevier
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White Papers
On the Support of Multimedia Applications Over IEEE 802.11-Based Wireless Mesh Networks
Mar 2009
The extended radio coverage provided by Wireless Mesh Networking (WMN) technologies represent a key advantage compared to the last mile solutions based on standard IEEE 802.11 hot spots....
Provided by Wing
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White Papers
Airtime Deficit Round Robin (ADRR) Packet Scheduling Algorithm
Jul 2008
In this paper, the authors present Airtime Deficit Round Robin (ADRR) a novel scheduling algorithm for IEEE 802.11- based wireless mesh networks. ADRR enhances the Deficit Round Robin scheduling...
Provided by Wing
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White Papers
Multimedia Support in IEEE 802.11 Based Wireless Mesh Networks
Apr 2009
The extended radio coverage provided by Wireless Mesh Networking (WMN) technologies represent a key advantage compared to the last mile solutions based on standard IEEE 802.11 hot spots....
Provided by Wing
-
White Papers
Phoenix: A Hybrid Cooperative-Network Coding Protocol for Fast Failure Recovery in Ad Hoc Networks
Apr 2008
Cooperative communication techniques have recently attracted much interest in the wireless research community. The possibility of achieving a low bit error rate without the need for special...
Provided by University of Padova
-
White Papers
On-Demand Cooperation MAC Protocols With Optimal Diversity-Multiplexing Tradeoff
Apr 2010
This paper presents access protocols with optimal Diversity-Multiplexing Tradeoff (DMT) performance in the context of IEEE 802.11-based mesh networks. The protocols are characterized by two main...
Provided by Université de Toulouse
-
White Papers
Performance of Multi-Channel MAC Incorporating Opportunistic Cooperative Diversity
Nov 2007
This paper proposes a Medium Access Control (MAC) protocol, termed as CD-MMAC, for wireless networks that utilizes multiple channels and incorporates opportunistic cooperative diversity...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Analysis of User Plane in IEEE 802.11b/g QoS Networks
Nov 2010
In this paper, the authors present the performances evaluation of infrastructure 802.11b/g QoS networks, in both HCF (Hybrid Coordination Function) operating modes: EDCA (Enhanced Distributed...
Provided by KTH Royal Institute of Technology
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White Papers
Analysis of Collision Probability in Unsaturated Situation
Mar 2010
A large number of the MAC protocols proposed for establishing wireless sensor networks are based on the 802.11 standard. The trade-off in these protocols is the control packet overhead and the...
Provided by Association for Computing Machinery
-
White Papers
Mathematical Analysis of Throughput Bounds in Random Access With ZIGZAG Decoding
Dec 2010
The authors investigate the throughput improvement that ZigZag decoding (Gollakota and Katabi 2008) can achieve in multi-user random access systems. ZigZag is a recently proposed 802.11 receiver...
Provided by Springer Science+Business Media
-
White Papers
Multimedia Cross-Platform Content Distribution for Mobile Peer-To-Peer Networks Using Network Coding
Oct 2010
This paper is looking into the possibility of multimedia content distribution over multiple mobile platforms forming wireless peer-to-peer networks. State of the art mobile networks are...
Provided by Association for Computing Machinery
-
White Papers
Energy and Link Measurements for Mobile Phones Using IEEE802.11b/g
Feb 2009
In this paper, the authors investigate the energy consumption and achievable data rates of commercially available mobiles phones using WLAN IEEE802.11bg for mobile peer to peer networking. In...
Provided by Aalborg University
-
White Papers
Know Your Neighbour: Packet Loss Correlation in IEEE 802.11b/g Multicast
Jul 2008
In this paper, the authors present a number of wireless measurements conducted on mobile phones using WLAN IEEE802.11b/g in a multicast scenario. When designing efficient error recovery mechanisms...
Provided by Association for Computing Machinery
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White Papers
Performance of IEEE 802.11a in Vehicular Contexts
Jul 2007
A key component of intelligent transportation is the provision of adequate network infrastructure to support vehicle-to-vehicle and vehicle-to-roadside communication. In this paper, the authors...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Evaluation of Multi-Carrier Burst Contention and IEEE 802.11 With Fading During Channel Sensing
Aug 2009
With the prevalence of wireless capability in mobile devices and the increasing number of wireless network deployments where protocols using carrier sensing (such as IEEE 802.11) are employed, it...
Provided by University of Cambridge
-
White Papers
Constructing Accurate, Space-Efficient, Wireless Coverage Maps for Vehicular Contexts
Nov 2008
Wireless connectivity for vehicles is a fast-growing market, with a plethora of different network technologies already in use. Surveys of the numbers of IEEE 802.11b/g access points in cities...
Provided by Association for Computing Machinery
-
White Papers
Multi-Carrier Burst Contention (MCBC): Scalable Medium Access Control for Wireless Networks
Jun 2008
With the rapid growth of WLAN capability for mobile devices such as laptops, handhelds, mobile phones and vehicles, the authors will witness WLANs with very large numbers of active nodes for which...
Provided by University of Cambridge
-
White Papers
Design Guidelines for a Network Architecture Integrating VANET With 3G & Beyond Networks
Jun 2010
Vehicle Ad hoc NETworks (VANETs), based on IEEE 802.11p, and 3G & beyond networks are characterized by their high data transmission rates and wide range communication, respectively. This paper...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Performance of IEEE 802.11 RTS/CTS With Finite Buffer and Load in Imperfect Channels: Modeling and Analysis
Jun 2010
Existing 2-D Markov chain models of IEEE 802.11 DCF mechanism are not capable to model the performance of the RTS/CTS access mode with finite buffer in imperfect channels due to the lack of...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Queuing Analysis for HCCA With Adaptive Modulation Coding Over Wireless LANs
May 2008
In this paper, a queuing model is introduced to analyze the HCF Controlled Channel Access (HCCA/IEEE802.11e) used in multi-rate wireless local area networks using adaptive modulation and coding,...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
QoS Provisioning for VoIP Over Wireless Local Area Networks
May 2008
With proliferation of the IEEE 802.11 WLAN and the emerging 802.11n standard, the WLAN is poised as a promising ubiquitous networking technology to support VoIP services, which is gaining...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Back-Off Scheme for IEEE802.11 Wireless LANs
May 2008
Conventional IEEE802.11 wireless LANs employ the binary exponential back-off scheme to determine a back-off window size. Performance evaluations of the binary exponential back-off scheme and...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
An Opportunistic MAC Protocol for Multiple Code Channels DS-CDMA Wireless Networks
May 2008
The authors propose a contention based Medium Access Control (MAC) protocol which will extend traditional single channel wireless network such as IEEE 802.11 Distributed Coordination Function...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
ARES: An Anti-Jamming REinforcement System for 802.11 Networks
Dec 2009
Dense, unmanaged 802.11 deployments tempt saboteurs into launching jamming attacks by injecting malicious interference. Nowadays, jammers can be portable devices that transmit intermittently at...
Provided by Association for Computing Machinery
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White Papers
On the Impact of MIMO Diversity on Higher Layer Performance
Mar 2010
In this paper, the authors shed light on the cross-layer interactions between the PHY, link and routing layers in networks with MIMO links operating in the diversity mode. Many previous studies...
Provided by University of Utah
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White Papers
Auto-Configuration of 802.11n WLANs
Dec 2010
Channel Bonding (CB) combines two adjacent frequency bands to form a new, wider band to facilitate high data rate transmissions in MIMO-based 802.11n networks. However, the use of a wider band...
Provided by Association for Computing Machinery
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White Papers
Energy-Aware WLAN Scanning in Integrated IEEE 802.16e/802.11 Networks
Jun 2009
The authors consider an issue arising in a Vertical HandOff (VHO) between IEEE 802.16e and IEEE 802.11 networks, i.e., how efficiently the scanning operation can be controlled to find a target...
Provided by Reed Elsevier
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White Papers
Multiple WNIC-Based Handoff in IEEE 802.11 WLANs
Aug 2009
The authors propose a novel scanning scheme for IEEE 802.11 by equipping Access Points (APs) with Multiple Wireless Network Interface Cards (Multi-WNICs), one of which is set to operate in an...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Idle Mode for Deep Power Save in IEEE 802.11 WLANs
Feb 2010
Along with the wide acceptance of IEEE 802.11 Wireless Local Area Network (WLAN), new applications such as Internet Protocol (IP) telephony over WLAN are fast emerging today. For battery-powered...
Provided by Seoul National University
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White Papers
A Performance Analysis of Block ACK Scheme for IEEE 802.11e Networks
Apr 2010
The demand for the IEEE 802.11 Wireless Local-Area Networks (WLANs) has been drastically increasing along with many emerging applications and services over WLAN. However, the IEEE 802.11 Medium...
Provided by Reed Elsevier
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White Papers
Resolving Intra-Class Unfairness in 802.11 EDCA
Sep 2010
The de facto quality-of-service provisioning mechanism for wireless LANs is the Enhanced Distributed Channel Access (EDCA), which provides enhanced service differentiation based on four different...
Provided by Springer Science+Business Media
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White Papers
VPAL: Video Packet Adaptation Layer for Reliable Video Multicast Over IEEE 802.11n WLAN
Jun 2010
In this paper, the authors propose a scheme, called Video Packet Adaptation Layer (VPAL), for reliable video multicast over the IEEE 802.11n WLAN. VPAL is composed of raptor coding for reliable...
Provided by Reed Elsevier
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White Papers
A Comparative Study of Handheld and Non-Handheld Traffic in Campus Wi-Fi Networks
Jan 2011
Handheld devices such as smartphones have become a major platform for accessing Internet services. The small, mobile nature of these devices results in a unique mix of network usage. Other studies...
Provided by University of Wisconsin-Madison
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White Papers
On the Empirical Performance of Self-Calibrating WiFi Location Systems
Jul 2011
The pervasive deployment of 802.11 in modern enterprise buildings has long made it an attractive technology for constructing indoor location services. To this end, a broad range of algorithms have...
Provided by UC Regents
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White Papers
Implementation and Performance Analysis of Cooperative Medium Access Control Protocol for CSMA/CA Based Technologies
May 2009
In this paper, the authors investigate three different MAC protocols based on CSMA/CA in terms of throughput and channel access delay. The investigation is based on analytical models and real...
Provided by Aalborg University
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White Papers
Connecting Remote Sites to the Wired Backbone by Wireless Mesh Access Networks
Feb 2010
Wireless Mesh Networks (WMNs) operating in the 5 GHz band (IEEE 802.11 a/h) offer a great opportunity to function as wireless access networks. Remote sites that lack direct access to a wired/fibre...
Provided by University of Bern
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White Papers
Experiment and Field Demonstration of a 802.11-Based Ground-UAV Mobile Ad-Hoc Network
Aug 2009
This paper describes a field demonstration and presents the network performance of an 802.11 ground-UAV network composed of 11 ground stations, a mobile vehicle and two fixed wing UAVs, connected...
Provided by Naval Research Laboratory
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White Papers
Fast Link Assessment in Wireless Mesh Networks by Using Non-Constant Weight Code
Aug 2009
The wireless mesh network is experiencing tremendous growth with the standardization of IEEE 802.11 and IEEE 802.16 technologies. Compared to its wired counterpart, the resource (e.g., capacity)...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Dynamic Programming Approach for Routing in Wireless Mesh Networks
Aug 2008
The routing problem in Wireless Mesh Networks is concerned with finding "Good" source-destination paths. It generally faces multiple objectives to be optimized, such as path capacity, which...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Trace-Based Evaluation of Rate Adaptation Schemes in Vehicular Environments
Feb 2010
There has been a variety of rate adaptation solutions proposed for both indoor and mobile scenarios. However, dynamic channel changing conditions (e.g., temporal channel variation due to...
Provided by UC Regents
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White Papers
Analytical Study of IEEE 802.11 PCF for Regional and Metropolitan Area Networks
Oct 2010
A star-like regional wireless network under IEEE 802.11 protocol is studied: its end stations are hidden from each other and linked only with the base station-the point of access to outer...
Provided by INSTITUTE OF INFORMATION TECHNOLOGIES
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White Papers
AuthScan: Enabling Fast Handoff Across Already Deployed IEEE 802.11 Wireless Networks
Jul 2008
Handoff procedure in IEEE 802.11 wireless networks must be accomplished with as little interruption as possible to maintain the required Quality of Service (QoS). The authors have developed a fast...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Two-Level Cross-Talked Admission Control Mechanism for QoS Guarantee in 802.11e EDCA
Oct 2007
In this paper, a two-level cross-talked admission control mechanism is proposed to guarantee QoS (Quality of Service) requirements for multimedia applications over WLANs (Wireless Local Area...
Provided by Tsinghua University
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White Papers
A Multi-AP Architecture for High-Density WLANs: Protocol Design and Experimental Evaluation
Feb 2009
Fast proliferation of IEEE 802.11 wireless devices has led to the emergence of High-Density (HD) Wireless Local Area Networks (WLANs), where it is challenging to improve the throughput because...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
On Optimal QoS-Aware Physical Carrier Sensing for IEEE 802.11 Based WLANs: Theoretical Analysis and Protocol Design
Oct 2007
In Wireless Local Area Networks (WLANs), traditional Physical Carrier Sensing (PCS), which aims at eliminating hidden terminals completely, brings too many exposed terminals and degrades the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Capacity Planning for Voice/Data Traffic in IEEE 802.11e Based Wireless LANs
Mar 2008
In this paper, the authors concentrate on IEEE 802.11e based WLANs with mixed Voice-over-IP (VoIP) and data services. Although the enhanced distributed coordination access mechanism of IEEE...
Provided by Tsinghua University
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White Papers
A MAC Layer ARQ Tuning Scheme to Optimize TCP Throughput in IEEE 802.11 Networks
Jun 2007
The enhancement of physical layer transmission technology provides lower Packet Error pRobability (PER) and consequently higher data rate in the modern IEEE 802.11 WLAN system. On the other hand,...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
On Optimal Physical Carrier Sensing: Theoretical Analysis and Protocol Design
Oct 2007
Traditional Physical Carrier Sensing (PCS), which aims at eliminating hidden terminals in wireless networks, causes too many exposed terminals and deteriorates the throughput per user seriously....
Provided by Hong Kong University of Science and Technology
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White Papers
Delay Analysis of IEEE 802.11e EDCA Under Unsaturated Conditions
Aug 2007
With the successful development of IEEE 802.11 based Wireless LAN (WLAN), applications with QoS requirements are asked to be provided in WLANs. Because of their delay restrictions, real-time...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Dynamic Admission Control Scheme for QoS Supporting in IEEE 802.11e EDCA
Aug 2007
With the successful development of IEEE 802.11 based Wireless LAN (WLAN), the IEEE 802.11e Enhanced Distributed Channel Access (EDCA) is proposed to support QoS of applications. However, EDCA...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Self-Configuration of IEEE 802.15.4 Wireless PANs for Urban Applications
Jun 2009
Pervasive sensor devices are expected to flood the urban environments of the future to provide citizens with specific services. Such services will be based on the monitoring of a multiplicity of...
Provided by University of Rome
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White Papers
Duty-Cycle Optimization in Unslotted 802.15.4 Wireless Sensor Networks
Aug 2008
The authors present a novel approach for minimizing the energy consumption of Medium Access Control (MAC) protocols developed for duty-cycled Wireless Sensor Networks (WSNs) for the unslotted IEEE...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Modeling and Characterization of Large-Scale Wi-Fi Traffic in Public Hot-Spots
May 2011
The ubiquitous deployment of wireless hot-spots has drawn millions of users to these networks. These hot-spots provide coverage using the IEEE 802.11 technology by means of Access Points (APs) and...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Receiver-Driven Queue Management for Achieving RTT-Fairness in Wi-Fi Networks
Jul 2009
In this paper, the authors introduce a novel queue management technique for the buffer space at the base station of infrastructure 802.11 networks that considers mobile user's receiving...
Provided by University of Trento
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White Papers
Assessing Link Quality in IEEE 802.11 Wireless Networks: Which Is the Right Metric?
Jun 2008
The accurate determination of the link quality is critical for ensuring that functionalities such as intelligent routing, load-balancing, power control and frequency selection operate efficiently....
Provided by UC Regents
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White Papers
Implication of MAC Frame Aggregation on Empirical Wireless Experimentation
Aug 2009
Wireless network emulator testbeds have become increasingly important for realistic, at-scale experimental evaluation of new network architectures and protocols. Typically, wireless network...
Provided by Rutgers University
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White Papers
IEEE 802.15.4 Packet Analysis With Wireshark and Off-the-Shelf Hardware
May 2010
The ability to overhear and analyse packets is essential for the development of protocols for IEEE 802.15.4-based Wireless Sensor Networks. Besides a number of commercial hardware and software...
Provided by Technische Universitat Braunschweig
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White Papers
Quality Aspects of Internet Telephony
May 2009
Internet telephony has had a tremendous impact on how people communicate. Many now maintain contact using some form of Internet telephony. Therefore the motivation for this work has been to...
Provided by Swedish Institute of Computer Science
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White Papers
Efficient Content Distribution in an Information-Centric Hybrid Mobile Network
Oct 2010
Information or content centric networking is believed by many to have great potential to be the appropriate networking paradigm for the future Internet. In information centric networking, focus is...
Provided by Swedish Institute of Computer Science
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White Papers
Minimising the Effect of WiFi Interference in 802.15.4 Wireless Sensor Networks
Dec 2007
Interference from colocated networks operating over the same frequency range, becomes an increasingly severe problem as the number of networks overlapping geographically increases. The authors'...
Provided by Inderscience Enterprises
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White Papers
Surviving Wi-Fi Interference in Low Power ZigBee Networks
Nov 2010
Frequency overlap across wireless networks with different radio technologies can cause severe interference and reduce communication reliability. The circumstances are particularly unfavorable for...
Provided by Association for Computing Machinery
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White Papers
MIMO Linear Array System Resource Management by Diagnosing the Optimal Configuration
Nov 2009
The use of multiple antennas at transmitter/receiver side and of spatial diversity increases the spectrum efficiency and overcomes the multi path propagation effects in a MIMO (Multiple Input...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Impact of RSS on the Performance of 3GPP Applications in a Net-on-Roads Connection
Nov 2009
Several works have been done to explore the possibility of using randomly located WiFi APs for getting broadband services from vehicles on roads and highways. While different works address issues...
Provided by University of Ulster
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White Papers
Cisco 802.11n Wireless LAN Design Guide
Oct 2011
Learn best practices, practical techniques, and guidelines for designing, planning, & implementing a wireless LAN within a high-density environment such as a university or college campus. These...
Provided by Cisco Systems, Inc.
-
White Papers
A Traffic Aggregation and Differentiation Scheme for Enhanced QoS in IEEE 802.11-Based Wireless Mesh Networks
Feb 2008
Wireless Mesh Networks are currently emerging as a promising paradigm for broadband ubiquitous Internet access. However, their distributed nature raises many challenges when facing the increasing...
Provided by Reed Elsevier
-
White Papers
On the Support of Multimedia Applications Over IEEE 802.11-Based Wireless Mesh Networks
Mar 2009
The extended radio coverage provided by Wireless Mesh Networking (WMN) technologies represent a key advantage compared to the last mile solutions based on standard IEEE 802.11 hot spots....
Provided by Wing
-
White Papers
Airtime Deficit Round Robin (ADRR) Packet Scheduling Algorithm
Jul 2008
In this paper, the authors present Airtime Deficit Round Robin (ADRR) a novel scheduling algorithm for IEEE 802.11- based wireless mesh networks. ADRR enhances the Deficit Round Robin scheduling...
Provided by Wing
-
White Papers
Multimedia Support in IEEE 802.11 Based Wireless Mesh Networks
Apr 2009
The extended radio coverage provided by Wireless Mesh Networking (WMN) technologies represent a key advantage compared to the last mile solutions based on standard IEEE 802.11 hot spots....
Provided by Wing
-
White Papers
Phoenix: A Hybrid Cooperative-Network Coding Protocol for Fast Failure Recovery in Ad Hoc Networks
Apr 2008
Cooperative communication techniques have recently attracted much interest in the wireless research community. The possibility of achieving a low bit error rate without the need for special...
Provided by University of Padova
-
White Papers
On-Demand Cooperation MAC Protocols With Optimal Diversity-Multiplexing Tradeoff
Apr 2010
This paper presents access protocols with optimal Diversity-Multiplexing Tradeoff (DMT) performance in the context of IEEE 802.11-based mesh networks. The protocols are characterized by two main...
Provided by Université de Toulouse
-
White Papers
Performance of Multi-Channel MAC Incorporating Opportunistic Cooperative Diversity
Nov 2007
This paper proposes a Medium Access Control (MAC) protocol, termed as CD-MMAC, for wireless networks that utilizes multiple channels and incorporates opportunistic cooperative diversity...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Analysis of User Plane in IEEE 802.11b/g QoS Networks
Nov 2010
In this paper, the authors present the performances evaluation of infrastructure 802.11b/g QoS networks, in both HCF (Hybrid Coordination Function) operating modes: EDCA (Enhanced Distributed...
Provided by KTH Royal Institute of Technology
-
White Papers
Analysis of Collision Probability in Unsaturated Situation
Mar 2010
A large number of the MAC protocols proposed for establishing wireless sensor networks are based on the 802.11 standard. The trade-off in these protocols is the control packet overhead and the...
Provided by Association for Computing Machinery
-
White Papers
Mathematical Analysis of Throughput Bounds in Random Access With ZIGZAG Decoding
Dec 2010
The authors investigate the throughput improvement that ZigZag decoding (Gollakota and Katabi 2008) can achieve in multi-user random access systems. ZigZag is a recently proposed 802.11 receiver...
Provided by Springer Science+Business Media
-
White Papers
Multimedia Cross-Platform Content Distribution for Mobile Peer-To-Peer Networks Using Network Coding
Oct 2010
This paper is looking into the possibility of multimedia content distribution over multiple mobile platforms forming wireless peer-to-peer networks. State of the art mobile networks are...
Provided by Association for Computing Machinery
-
White Papers
Energy and Link Measurements for Mobile Phones Using IEEE802.11b/g
Feb 2009
In this paper, the authors investigate the energy consumption and achievable data rates of commercially available mobiles phones using WLAN IEEE802.11bg for mobile peer to peer networking. In...
Provided by Aalborg University
-
White Papers
Know Your Neighbour: Packet Loss Correlation in IEEE 802.11b/g Multicast
Jul 2008
In this paper, the authors present a number of wireless measurements conducted on mobile phones using WLAN IEEE802.11b/g in a multicast scenario. When designing efficient error recovery mechanisms...
Provided by Association for Computing Machinery
-
White Papers
Performance of IEEE 802.11a in Vehicular Contexts
Jul 2007
A key component of intelligent transportation is the provision of adequate network infrastructure to support vehicle-to-vehicle and vehicle-to-roadside communication. In this paper, the authors...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Evaluation of Multi-Carrier Burst Contention and IEEE 802.11 With Fading During Channel Sensing
Aug 2009
With the prevalence of wireless capability in mobile devices and the increasing number of wireless network deployments where protocols using carrier sensing (such as IEEE 802.11) are employed, it...
Provided by University of Cambridge
-
White Papers
Constructing Accurate, Space-Efficient, Wireless Coverage Maps for Vehicular Contexts
Nov 2008
Wireless connectivity for vehicles is a fast-growing market, with a plethora of different network technologies already in use. Surveys of the numbers of IEEE 802.11b/g access points in cities...
Provided by Association for Computing Machinery
-
White Papers
Multi-Carrier Burst Contention (MCBC): Scalable Medium Access Control for Wireless Networks
Jun 2008
With the rapid growth of WLAN capability for mobile devices such as laptops, handhelds, mobile phones and vehicles, the authors will witness WLANs with very large numbers of active nodes for which...
Provided by University of Cambridge
-
White Papers
Design Guidelines for a Network Architecture Integrating VANET With 3G & Beyond Networks
Jun 2010
Vehicle Ad hoc NETworks (VANETs), based on IEEE 802.11p, and 3G & beyond networks are characterized by their high data transmission rates and wide range communication, respectively. This paper...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Performance of IEEE 802.11 RTS/CTS With Finite Buffer and Load in Imperfect Channels: Modeling and Analysis
Jun 2010
Existing 2-D Markov chain models of IEEE 802.11 DCF mechanism are not capable to model the performance of the RTS/CTS access mode with finite buffer in imperfect channels due to the lack of...
Provided by Institute of Electrical and Electronics Engineers
-
Case Studies
Hospital Delivers Reliable Mobile Device Support
Oct 2011
Leading hospital migrated to Cisco's CleanAir system-implementing the Cisco Aironet 3500 Series access points, Cisco Mobility Services Engine, and more—to isolate and address interference from...
Provided by Cisco Systems, Inc
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White Papers
Queuing Analysis for HCCA With Adaptive Modulation Coding Over Wireless LANs
May 2008
In this paper, a queuing model is introduced to analyze the HCF Controlled Channel Access (HCCA/IEEE802.11e) used in multi-rate wireless local area networks using adaptive modulation and coding,...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
QoS Provisioning for VoIP Over Wireless Local Area Networks
May 2008
With proliferation of the IEEE 802.11 WLAN and the emerging 802.11n standard, the WLAN is poised as a promising ubiquitous networking technology to support VoIP services, which is gaining...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Back-Off Scheme for IEEE802.11 Wireless LANs
May 2008
Conventional IEEE802.11 wireless LANs employ the binary exponential back-off scheme to determine a back-off window size. Performance evaluations of the binary exponential back-off scheme and...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
An Opportunistic MAC Protocol for Multiple Code Channels DS-CDMA Wireless Networks
May 2008
The authors propose a contention based Medium Access Control (MAC) protocol which will extend traditional single channel wireless network such as IEEE 802.11 Distributed Coordination Function...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Vehicle-to-Vehicle Communication: Fair Transmit Power Control for Safety-Critical Information
Aug 2009
Direct radio-based vehicle-to-vehicle communication can help prevent accidents by providing accurate and up-to-date local status and hazard information to the driver. In this paper, the authors...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Optimal Fully Adaptive Power Management Protocols for Asynchronous Multi-Hop Ad Hoc Wireless Networks
May 2008
IEEE 802.11 has become the de facto MAC standard for multi-hop MANETs. However, once PS stations get out of synchronization, then 802.11 power management may completely fail. Thus the authors...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Toward Network Coding-Based Protocols for Data Broadcasting in Wireless Ad Hoc Networks
Mar 2010
In this paper, the authors consider practical dissemination algorithms exploiting network coding for data broadcasting in ad hoc wireless networks. For an efficient design, they analyze issues...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Implications of Device Diversity for Organic Localization
Jan 2011
Many indoor localization methods are based on the association of 802.11 wireless RF signals from Wireless Access Points (WAPs) with location labels. An "Organic" RF positioning system relies on...
Provided by Nokia
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White Papers
Reducing the Calibration Effort for Probabilistic Indoor Location Estimation
Aug 2010
WLAN location estimation based on 802.11 signal strength is becoming increasingly prevalent in today's pervasive computing applications. Among the well-established location determination...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Unsupervised Learning for Solving RSS Hardware Variance Problem in WiFi Localization
Jan 2009
Hardware variance can significantly degrade the positional accuracy of RSS-based Wi-Fi localization systems. Although manual adjustment can reduce positional error, this solution is not scalable...
Provided by Springer Science+Business Media
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White Papers
Ripple: A Wireless Token-Passing Protocol for Multi-Hop Wireless Mesh Networks
Oct 2010
This paper presents a wireless token-passing protocol, named Ripple, for Wireless Mesh Networks (WMNs). In contrast to existing random-access approaches, Ripple uses a decentralized...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
IEEE 802.11n MAC Enhancement and Performance Evaluation
Jan 2009
The IEEE 802.11-based WiFi wireless technology is one of the most promising technologies to provide ubiquitous networking access. The IEEE 802.11 working group has always strived to improve this...
Provided by Springer Science+Business Media
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White Papers
Cross-Layer Adaptive H.264/AVC Streaming Over IEEE 802.11e Experimental Testbed
Feb 2010
In recent years, the rapid development of wireless communication allows one to enjoy more multimedia services via wireless network. However, due to lack of QoS support and characteristics of...
Provided by National Taiwan University
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White Papers
Accelerometer-Assisted Power Efficient Wi-Fi Networking on Public Transportation System
Sep 2009
Using mobile devices to access the network service over public transportation system provides ubiquitous network access. Accelerometer has become more and more popular in mobile handheld devices....
Provided by Association for Computing Machinery
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White Papers
MobiCom 2009 Poster: Accelerometer-Assisted Power Efficient Wi-Fi Networking on Public Transportation System
Jul 2010
Using mobile devices to access the network service over public transportation system provides ubiquitous network access. Accelerometer has become standard equipment in mobile handheld devices. The...
Provided by National Taiwan University
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Case Studies
Top Healthcare Organization Optimizes 802.11n Performance
Sep 2011
The Ohio State University Medical Center is known widely for helping to shape the future of healthcare. Their challenge is to enhance the wireless infrastructure with new technologies to avoid the...
Provided by Cisco Systems
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White Papers
Backward-Compatible Dynamic Spectrum Leasing for 802.11-Based Wireless Networks
Jun 2010
Dynamic Spectrum Access (DSA) is proposed to deal with the growing shortage of available leased spectrum for wireless communication. The authors investigate a subset of DSA referred to as Dynamic...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
802.11 User Anonymization
Jun 2010
Privacy issues have been a serious concern for 802.11 Wireless LAN users. As demonstrated by Pang et al. and Xu et al., applying pseudonym techniques does not completely protect users' privacy. In...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Novel Power Saving Strategy for Greening IEEE 802.11 Based Wireless Networks
Jun 2010
The authors propose a novel power saving strategy called Sleep during Neighbor-Addressed Frame (SNAF) for improving energy efficiency of IEEE 802.11 based wireless networks. IEEE 802.11 (Wi-Fi)...
Provided by Institute of Electrical and Electronics Engineers
