- Subscribe to this page:
- RSS
- Email Alert
wireless lan
(1552 results)-
White Papers
Cooperative Carrier Signaling: Harmonizing Coexisting WPAN and WLAN Devices
Jun 2011
The unlicensed ISM spectrum is getting crowded by WLAN and WPAN users and devices. Spectrum sharing within the same network of devices can be arbitrated by existing MAC protocols, but the...
Provided by University of Michigan
-
White Papers
Modeling Channel Conflict Probabilities Between IEEE 802.11b and IEEE 802.15.1 Networks
Jun 2007
With the increasingly deployed Wireless Local/ Personal Area Network (WLAN/WPAN) devices, channel conflict has become very frequent and severe when one WLAN/WPAN technology coexists with other...
Provided by Institute of Information Science
-
White Papers
A Frame Aggregation Scheduler for IEEE 802.11n
Feb 2010
Wireless Local Area Networks (WLANs) based on the IEEE 802.11 standard are widely deployed in the home and enterprise segments across the globe. The IEEE 802.11n is the latest amendment that aims...
Provided by Anna University
-
White Papers
W-Meter : An Open-Source WLAN Product Evaluation Framework
Apr 2011
Wireless LAN products based on the IEEE 802.11 standards are very popular across home and enterprise markets globally. The certification programmed conducted by the Wi-Fi alliance is expensive and...
Provided by Anna University
-
White Papers
Orthogonal Frequency Division Multiple Access in WiMAX and LTE - A Comparison
Feb 2010
Orthogonal Frequency Division Multiple Access (OFDMA) has been adopted by all the proposals which have been considered for the Fourth Generation (4G) wireless technologies. Specifically, the two...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Analysis of Open Source Drivers for IEEE 802.11 WLANs
May 2010
The purpose of this paper is to analyze the open source IEEE 802.11 Wireless Local Area Network (WLAN) stack implementation for further enhancement and implementations. The authors discuss the...
Provided by Anna University
-
White Papers
Secure Handover in Enterprise WLANs: CAPWAP, HOKEY, and IEEE 802.11r
Jul 2008
As Wireless LANs become more and more ubiquitous, the number and types of applications they are supporting is ever-increasing. As real-time performance requirements begin to emerge, the latency...
Provided by University of Maryland
-
White Papers
A Timer-Based Session Setup Procedure in Cellular-WLAN Integrated Systems
Apr 2011
The multiple registration scheme can reduce signaling overhead at the expense of increased session setup latency in cellular-WLAN integrated systems. In this paper, the authors propose a...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
GUIDE-Gradient: A Guiding Algorithm for Mobile Nodes in WLAN and Ad-Hoc Networks
Dec 2009
Whereas there is a lot of work related to finding the location of users in WLAN and ad-hoc networks, guiding users in these networks remains mostly an unexplored area of research. In this paper,...
Provided by Springer Science+Business Media
-
White Papers
GUIDE: Guiding Users in Distributed Environments for WLAN and Ad Hoc Networks
Jul 2008
Whereas there is a lot of work related to finding the location of users in WLAN and ad hoc networks, guiding users in these networks remains an unexplored area of research. In this paper, the...
Provided by Universidad Nacional Autonoma de Mexico
-
White Papers
Impact of Aggregate Interference on Meteorological Radar From Secondary Users
Jan 2011
In this paper, the authors investigate the impact of aggregate interference in a secondary spectrum access system. Particularly, meteorological radar operating in 5.6 GHz band is considered to be...
Provided by KTH - Royal Institute of Technology
-
White Papers
Dynamic Adaptation of CSMA/CA MAC Protocol for Wide Area Wireless Mesh Networks
Feb 2008
Though the popular IEEE 802.11 DCF is designed primarily for Wireless LAN (WLAN) environments, today it is being widely used for wide area wireless mesh networking. The protocol parameters of IEEE...
Provided by Reed Elsevier
-
White Papers
IEEE 802.11s Wireless Mesh Networks
May 2008
Nowdays, WLAN technology covers a wide variety of devices and applications used by many users around the globe. The most common standard in WLANs is the well known IEEE 802.11 which comprises a...
Provided by Lund University
-
White Papers
Handover Between GSM (2G), UMTS (3G) and Wireless Local Area Networks (WLANs)
May 2008
Investigation of HandOvers (HO) between different radio access technologies opens up a wide range of optimization possibilities in terms of utilization of network resources and better coverage...
Provided by Lund University
-
White Papers
Performance Analysis of Joint Radio Resource Management Strategies for Beyond 3G Networks
Jul 2009
In beyond 3G networks the user will not be aware of the access network technology used to provide a telecommunications service. Heterogeneous network technologies will be seamlessly integrated in...
Provided by Universidade do Porto
-
White Papers
Can They Hear Me Now?: A Case for a Client-Assisted Approach to Monitoring Wide-Area Wireless Networks
Nov 2011
The authors present WiScape, a framework for measuring and under-standing the behavior of wide-area wireless networks, e.g., city-wide or nation-wide cellular data networks using active...
Provided by Association for Computing Machinery
-
White Papers
A Global Optimisation Algorithm for 802.11 WLAN Radio Resource Management
Feb 2008
The wireless link is still the bottleneck in 802.11 WLAN systems, especially in a public WLAN deployment with high-demand users. The most common way of improving the system performance is by...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
AP Load Balancing and AP Fallback in Unified Wireless Networks
Jul 2007
This paper discusses how Access Point (AP) load balancing and AP fallback work in the Cisco Unified Wireless solution. This paper also explains how to set up multiple Wireless LAN (WLAN)...
Provided by Cisco Systems
-
White Papers
Malicious or Selfish- Analysis of Carrier Sense Misbehavior in IEEE 802.11 WLAN
Oct 2009
The behavior of selfish users, which does not respect the backoff procedure of IEEE 802.11 WLAN, has been nicely studied in game-theoretic frameworks. However, in these studies, the effect of...
Provided by Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering
-
White Papers
Sniffer Channel Selection for Monitoring Wireless LA
May 2009
Wireless sniffers are often used to monitor APs in Wireless LANs (WLANs) for network management, fault detection, traffic characterization, and optimizing deployment. It is cost effective to...
Provided by University of Connecticut
-
White Papers
Virtual Partitioning for Connection Admission Control in Cellular/WLAN Interworking
Dec 2007
Wireless Wide Area Networks (WWANs) and Wireless Local Area Networks (WLANs) have complementary characteristics which make them suitable to jointly offer an ubiquitous wireless solution. In...
Provided by University of British Columbia
-
White Papers
An Analysis of the Heterogeneity and IP Packet Reordering Over Multiple Wireless Networks
Mar 2009
With the increasing deployment of wireless technologies, such as WLAN, HSDPA, and WiMAX, it is often the case that simultaneous coverage of several access networks is available to a single user...
Provided by University of Oslo
-
White Papers
Virtualization of 802.11 Interfaces for Wireless Mesh Networks
Feb 2011
Equipping wireless devices with multiple radio interfaces enables multi-channel communication that has attracted recent interest due to its significant benefits in terms of exploiting the...
Provided by University of Passau
-
White Papers
Connectivity-Aware Routing (CAR) in Vehicular Ad Hoc Networks
May 2007
Vehicular ad hoc networks using WLAN technology have recently received considerable attention. The authors present a position-based routing scheme called Connectivity-Aware Routing (CAR) designed...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Modeling and Analysis of Handoffs in Cellular and WLAN Integration
Jun 2007
In this paper, the authors propose an Integrated Service-Based hand-off scheme with (ISBQ) and without Queue capability (ISB) for the cellular and WLAN integration. The proposed hand-off schemes...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
An End-to-End Technique to Estimate the Transmission Rate of an IEEE 802.11 WLAN
Jun 2007
The deployment of Wireless LANs (WLANs) has been steadily increasing over the years and estimating the actual bit rate of a WLAN device is important for management and applications such as those...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
On the Service Differentiation Capabilities of EY-NPMA and 802.11 DCF
Jan 2011
Most existing WLAN access mechanisms cannot provide QoS assurances. Even those that are QoS aware can only provide relative service differentiation. Based on EY-NPMA, the HIPERLAN Medium Access...
Provided by Aristotle University of Thessaloniki
-
White Papers
Adopting IMS in WiFi Technology
Dec 2007
IP Multimedia Subsystem which is standardized by 3GPP is an important step to improve the delivery of innovating IPTelephony and Multimedia services to the customers in 3G and B3G networks....
Provided by Institut Telecom
-
White Papers
Delay-Constrained Optimized Packet Aggregation in High-Speed Wireless Ad Hoc Networks
May 2011
In recent years, high-speed WLANs are introduced to service growing demand of delay-sensitive and multimedia applications. To improve efficiency at the MAC layer of high-speed WLANs, few...
Provided by University of Tehran
-
White Papers
Noncollaborative Resource Management for Wireless Multimedia Applications Using Mechanism Design
Jun 2007
The authors propose to add a new dimension to existing wireless multimedia communications systems by enabling competing stations to proactively engage in the resource management game by adapting...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
An Agent Based Authentication Architecture for WLAN/Cellular Integrated Service
Jun 2007
In this paper, an agent based WLAN/cellular network integrated service model and relevant authentication scheme is proposed. The service model, or solution, does not require cumbersome...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Two-Factor Localized Authentication Scheme for WLAN Roaming
Jun 2007
In the paper, the authors propose an efficient two-factor localized authentication scheme suitable for WLAN roaming. The proposed authentication scheme can greatly improve the security compared...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
MIMO Performance of Diversity-Rich Compact Six-Port Dielectric Resonator Antenna Arrays in Measured Indoor Environments at 2.65 GHz
May 2009
MIMO systems can achieve linear capacity gain proportional to the number of antennas. However, the compactness of terminal devices limits the number of spatial degrees of freedom in such systems,...
Provided by Lund University
-
White Papers
Closely Located Dual PIFAs With T-Slot Induced High Isolation for MIMO Terminals
Jul 2011
This paper presents an efficient technique to enhance the isolation between two closely spaced PIFAs for MIMO mobile terminals. The proposed decoupling method is based on a Tshape slot impedance...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
SFRIC: A Secure Fast Roaming Scheme in Wireless LAN Using ID-Based Cryptography
Jun 2007
In a wireless network composed of multiple access points, a long delay during roaming from one access point to another may cause a disruption for streaming traffic. Roaming in wireless LAN is...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
System-Level Design of a Delta-Sigma Modulator Target for Next Generation Wireless Application
Mar 2010
Due to the increasing digital processing speed in the DSP, communication data is transferred in a channel bandwidth of 20 MHz according to the IEEE 802.11e standard. It is reasonable to believe...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Study of Best-Effort VoIP Handovers Between WLAN and EVDO Networks
Jun 2007
The IEEE 802.11 based Wireless LANs (WLANs) have emerged as a viable technology for supporting real-time applications such as Voice over IP (VoIP). Even the Personal Digital Assistants and...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
MIMO Wireless Linear Precoding
Sep 2007
The benefits of using multiple antennas at both the transmitter and the receiver in a wireless system are well established. Multiple-Input Multiple-Output (MIMO) systems enable a growth in...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Handoff Triggering and Network Selection Algorithms for Load-Balancing Handoff in CDMA-WLAN Integrated Networks
Aug 2008
This paper proposes a novel vertical hand-off algorithm between WLAN and CDMA networks to enable the integration of these networks. The proposed vertical hand-off algorithm assumes a hand-off...
Provided by Texas A&M University
-
White Papers
Multiple-Antenna Interference Cancellation for WLAN With MAC Interference Avoidance in Open Access Networks
Sep 2007
The potential of multi-antenna interference cancellation receiver algorithms for increasing the uplink throughput in WLAN systems such as 802.11 is investigated. The Medium Access Control (MAC) in...
Provided by Bell
-
White Papers
A Converged Charging Framework for Mobile Voice and Data Applications
Sep 2009
The evolution of an integrated mobile communication environment enables service deployment and content delivery offered by independent providers through heterogeneous network infrastructures. In a...
Provided by Academy Publisher
-
White Papers
Adaptive FEC Reliable Multicast MAC Protocol for WLANs
Jun 2007
For end-to-end wireless multicast applications like multimedia conferencing, voice over IP and video/audio streaming applications which require reliable transmission of frames within short...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Reliable Multicast Mechanism in WLAN With Extended Implicit MAC Acknowledgment
Feb 2010
In this paper, the authors study reliable multicast at the MAC layer for IEEE 802.11 Wireless LANs. In IEEE 802.11, multicast protocol is based on the basic access procedure of Carrier Sense...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Reliable Peer-to-Peer Protocol for Mobile Ad-Hoc Wireless Networks
Nov 2010
Reliable, fast, and power aware communication is needed for Ad-Hoc wireless networks. Current techniques based on client-server and Publish/Subscribe communication models are not suitable in...
Provided by King Fahd University of Petroleum & Minerals
-
White Papers
VoIP and Database Traffic Co-Existence Over IEEE 802.11b WLAN With Redundancy
Jun 2009
This paper presents the findings of two experiments that were performed on the Redundancy in Wireless Connection Model (RiWC) using the 802.11b standard. The experiments were simulated using OPNET...
Provided by World Academy of Science, Engineering and Technology
-
White Papers
Cryptanalysis of Two-Factor Authenticated Key Exchange Protocol in Public Wireless LANs
Dec 2009
In Public Wireless LANs (PWLANs), user anonymity is an essential issue. Recently, Juang et al. proposed an anonymous authentication and key exchange protocol using smart cards in PWLANs. They...
Provided by Sungkyunkwan University
-
White Papers
A Survey on Voice Over IP Over Wireless LANs
Dec 2010
Voice over Internet Protocol (VoIP) is a form of voice communication that uses audio data to transmit voice signals to the end user. VoIP is one of the most important technologies in the World of...
Provided by World Academy of Science, Engineering and Technology
-
White Papers
Wireless Mesh Networks
Sep 2008
Wireless telemedicine using GSM and GPRS technologies can only provide low bandwidth connections, which makes it difficult to transmit images and video. Satellite or 3G wireless transmission...
Provided by Swansea University
-
White Papers
Voice Over IP: Improving the Quality Over Wireless LAN by Adopting a Booster Mechanism
Nov 2007
The performance of unreliable voice transmission (Voice over IP) over wireless links is measured not by the throughput but by the perceptual speech quality. The speech quality is impaired by...
Provided by Technische Universität Berlin
-
White Papers
Enhancing QoS for Streaming Video Over WLANs
Oct 2008
Recent times have seen a tremendous surge of multimedia traffic over the Wireless Local Area Networks or WLANs. However, the bandwidth intensive multimedia traffic takes the most brunt when a WLAN...
Provided by San Diego State University
-
White Papers
Impact of Interfering Bluetooth Piconets on a Collocated p-Persistent CSMA-Based WLAN
Jun 2009
In this paper, the effect of co-channeled BlueTooth (BT) piconets on a Carrier Sense Multiple Access (CSMA)-based Wireless Local Area Network (WLAN) is investigated. Specifically, the p-persistent...
Provided by Bell Labs
-
White Papers
Channel Allocation and Routing in Wireless Mesh Networks: A Survey and Qualitative Comparison Between Schemes
Feb 2010
In order to avoid transmission's collisions and improve network performances in Wireless Mesh Networks (WMNs), a reliable and efficient Medium Access Control (MAC) protocol and a good channel...
Provided by AIRCC
-
White Papers
Error Bound of Collision Probability Estimation in Non-Saturated IEEE 802.11 WLANs
Jul 2007
The authors analytically prove that the error in the channel idle time-based collision probability estimation in face of non-saturated stations is bounded by 2/(CWmin+1) in the IEEE 802.11...
Provided by Institute of Electronics, Information and Communication Engineers
-
White Papers
Loss-Aware Network Coding for Unicast Wireless Sessions: Design, Implementation, and Performance Evaluation
Jun 2008
Local network coding is growing in prominence as a technique to facilitate greater capacity utilization in multi-hop wireless networks. A specific objective of such local network coding techniques...
Provided by Association for Computing Machinery
-
White Papers
Traffic-Aware Channel Assignment in Enterprise Wireless LANs
Sep 2007
Campus and enterprise wireless networks are increasingly characterized by ubiquitous coverage and rising traffic demands. Efficiently assigning channels to Access Points (APs) in these networks...
Provided by University of Wisconsin
-
White Papers
CENTAUR: Realizing the Full Potential of Centralized WLANs Through a Hybrid Data Path
Sep 2009
Enterprise WLANs have made a dramatic shift towards centralized architectures in the recent past. The reasons for such a change have been ease of management and better design of various control...
Provided by Association for Computing Machinery
-
White Papers
5 Key strategies to manage the cultural impacts of mobility management
Jan 2011
The bottom line is that successful wireless management requires a cultural shift. The good news? Cultural challenge doesn't have to be a roadblock! With a good strategy and implementation plan,...
Provided by ProfitLine
-
White Papers
Can You Afford Not to Manage Mobile? How to Generate Immediate Savings from Mobile Spend
Jan 2011
According to predictions made by BoxTone in a 2010 press release, "Device and mobile delivery platform diversity will continue to expand, with most organizations moving from one mobile platform...
Provided by ProfitLine
-
White Papers
SAM: Enabling Practical Spatial Multiple Access in Wireless LAN
Sep 2009
Spatial multiple access holds the promise to boost the capacity of wireless networks when an access point has multiple antennas. Due to the asynchronous and uncontrolled nature of wireless LANs,...
Provided by Association for Computing Machinery
-
White Papers
Physical Layer Attacks on Unlinkability in Wireless LANs
Jul 2009
Recent work has focused on hiding explicit network identifiers such as hardware addresses from the link layer to enable anonymous communications in wireless LANs. These protocols encrypt entire...
Provided by University of Colorado
-
Whitepapers
Speeding Up File Transfers in Windows 7
Jan 2011
File transfers in Windows involve many factors, any one of which can present problems. In a typical Windows network with a mix of clients and servers, file transfer performance can vary wildly....
Provided by Global Knowledge
-
White Papers
Turning Hidden Nodes Into Helper Nodes in IEEE 802.11 Wireless LAN Networks
May 2008
To enhance the performance of IEEE 802.11 WLANs in the presence of hidden terminal problem, the authors proposes a protocol that allows non-hidden stations to help each other retransmit faster...
Provided by IFIP
-
White Papers
ZipTx: Harnessing Partial Packets in 802.11 Networks
Sep 2008
Current wireless protocols retransmit packets that fail the checksum test, even when most of the bits are correctly received. Prior work has recognized this inefficiency; however, the proposed...
Provided by Association for Computing Machinery
-
White Papers
A Fully Integrated Multiband Frequency Synthesizer for WLAN and WiMAX Applications
Sep 2010
This paper presents a fractional N frequency synthesizer which covers WLAN and WiMAX frequencies on a single chip. The synthesizer is fully integrated in 0.35ìm BiCMOS AMS technology except...
Provided by EUMA - European Management Assistants
-
White Papers
Opportunistic Use of Client Repeaters to Improve Performance of WLANs
Dec 2008
Currently deployed IEEE 802.11WLANs (Wi-Fi Networks) share Access Point (AP) bandwidth on a per-packet basis. However, the various stations communicating with the AP often have different signal...
Provided by Association for Computing Machinery
-
White Papers
Symphony: Synchronous Two-Phase Rate and Power Control in 802.11 WLANs
Jun 2008
Adaptive transmit power control in 802.11 Wireless LANs (WLANs) on a per-link basis helps increase network capacity and improves battery life of Wi-Fi enabled mobile devices. However, it faces the...
Provided by Association for Computing Machinery
-
White Papers
On Security Vulnerabilities of Null Data Frames in IEEE 802.11 Based WLANs
Mar 2008
Null data frames are a special but important type of frames in IEEE 802.11 based Wireless Local Area Networks (E.g., 802.11 WLANs). They are widely used for power management, channel scanning and...
Provided by City University of Hong Kong
-
White Papers
Measurement-Driven Guidelines for 802.11 WLAN Design
Jan 2010
Dense deployments of WLANs suffer from increased interference and, as a result, reduced capacity. There are three main functions used to improve the overall network capacity: intelligent frequency...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Collision-Aware Design of Rate Adaptation for Multi-Rate 802.11 WLANs
Jun 2008
One of the key challenges in designing a rate adaptation scheme for IEEE 802.11 Wireless LANs (WLANs) is to differentiate bit errors from link-layer collisions. Many recent rate adaptation schemes...
Provided by Seoul National University
-
White Papers
Detecting Selfish Exploitation of Carrier Sensing in 802.11 Networks
May 2009
Recently, tuning the Clear Channel Assessment (CCA) threshold in conjunction with power control has been considered for improving the performance of Wireless LANs. However, CCA tuning can be...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Empirical Studies and Queuing Modeling of Denial of Service Attacks Against 802.11 WLANs
Nov 2009
The growing popularity of 802.11-based Wireless LANs (WLAN) also increases the risk of security attacks. Most studies of WLAN security are on the protection of data integrity, and few studies are...
Provided by DePaul University
-
White Papers
Channel Assignment Schemes for Infrastructure-Based 802.11 WLANs: A Survey
Jan 2010
Efficient channel assignment is crucial for successful deployment and operation of IEEE 802.11-based WLANs. This paper presents a survey on the state of the art channel assignment schemes in IEEE...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Channel Assignment in an IEEE 802.11 WLAN Based on Signal-To-Interference Ratio
Dec 2007
This paper proposes a channel-assignment algorithm at the Access Points (APs) of a Wireless Local Area Network (WLAN) in order to maximize Signal-to-Interference Ratio (SIR) at the user level. The...
Provided by University of North Texas
-
White Papers
PEGASUS: 802.11 Connectivity at High Speed
Sep 2007
Measurements and ongoing research have shown that WLAN connection for moving vehicles is feasible. However none of the previous works suggests a solution addressing a complete array of the...
Provided by University of Maryland
-
White Papers
Link-Layer Protection in 802.11i WLANs With Dummy Authentication
Mar 2009
The current 802.11i standard can provide data confidentiality, integrity and mutual authentication in enterprise Wireless Local Area Networks (WLANs). However, secure communication can only be...
Provided by Association for Computing Machinery
-
White Papers
802.11a or HiperLAN2: Which Technology Will Emerge as the 5 GHz WLAN Standard?
Jan 2011
Wireless networks are becoming increasingly common in homes and businesses alike. Buyers have realized the convenience that cordless networks offer. Prices have plummeted recently opening up the...
Provided by University of Colorado at Boulder
-
White Papers
MDG: Measurement-Driven Guidelines for 802.11 WLAN Design
Sep 2007
Dense deployments of WLANs suffer from increased interference and as a result, reduced capacity. There are three main functions used to improve the overall network capacity: intelligent frequency...
Provided by Association for Computing Machinery
-
White Papers
Wireless Telemedicine Services Over Integrated IEEE 802.11/WLAN and IEEE 802.16/WiMAX Networks
Feb 2010
Wireless telemedicine, also referred to as mobile health, which capitalizes on advances of wireless technologies to deliver health care and exchange medical knowledge anywhere, and any time,...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A WiFi Measurement in 802.11g Networks
Feb 2010
The hidden terminal problem is closely related to the Transmission Range (TX Range), Carrier Sensing Range (CS Range) and InterFerence Range (IF Range) of stations in wireless local area networks...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
SplitAP: Leveraging Wireless Network Virtualization for Flexible Sharing of WLANs
Jul 2010
Providing air-time guarantees across a group of clients forms a fundamental building block in sharing an Access Point (AP) across different virtual network providers. Though this problem has a...
Provided by Rutgers University
-
White Papers
An Analysis of the Heterogeneity and IP Packet Reordering Over Multiple Wireless Networks
Mar 2009
With the increasing deployment of wireless technologies, such as WLAN, HSDPA, and WiMAX, it is often the case that simultaneous coverage of several access networks is available to a single user...
Provided by University of Oslo
-
White Papers
Virtualization of 802.11 Interfaces for Wireless Mesh Networks
Feb 2011
Equipping wireless devices with multiple radio interfaces enables multi-channel communication that has attracted recent interest due to its significant benefits in terms of exploiting the...
Provided by University of Passau
-
White Papers
Connectivity-Aware Routing (CAR) in Vehicular Ad Hoc Networks
May 2007
Vehicular ad hoc networks using WLAN technology have recently received considerable attention. The authors present a position-based routing scheme called Connectivity-Aware Routing (CAR) designed...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Modeling and Analysis of Handoffs in Cellular and WLAN Integration
Jun 2007
In this paper, the authors propose an Integrated Service-Based hand-off scheme with (ISBQ) and without Queue capability (ISB) for the cellular and WLAN integration. The proposed hand-off schemes...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
An End-to-End Technique to Estimate the Transmission Rate of an IEEE 802.11 WLAN
Jun 2007
The deployment of Wireless LANs (WLANs) has been steadily increasing over the years and estimating the actual bit rate of a WLAN device is important for management and applications such as those...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
On the Service Differentiation Capabilities of EY-NPMA and 802.11 DCF
Jan 2011
Most existing WLAN access mechanisms cannot provide QoS assurances. Even those that are QoS aware can only provide relative service differentiation. Based on EY-NPMA, the HIPERLAN Medium Access...
Provided by Aristotle University of Thessaloniki
-
White Papers
Adopting IMS in WiFi Technology
Dec 2007
IP Multimedia Subsystem which is standardized by 3GPP is an important step to improve the delivery of innovating IPTelephony and Multimedia services to the customers in 3G and B3G networks....
Provided by Institut Telecom
-
White Papers
Delay-Constrained Optimized Packet Aggregation in High-Speed Wireless Ad Hoc Networks
May 2011
In recent years, high-speed WLANs are introduced to service growing demand of delay-sensitive and multimedia applications. To improve efficiency at the MAC layer of high-speed WLANs, few...
Provided by University of Tehran
-
White Papers
Noncollaborative Resource Management for Wireless Multimedia Applications Using Mechanism Design
Jun 2007
The authors propose to add a new dimension to existing wireless multimedia communications systems by enabling competing stations to proactively engage in the resource management game by adapting...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
An Agent Based Authentication Architecture for WLAN/Cellular Integrated Service
Jun 2007
In this paper, an agent based WLAN/cellular network integrated service model and relevant authentication scheme is proposed. The service model, or solution, does not require cumbersome...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Two-Factor Localized Authentication Scheme for WLAN Roaming
Jun 2007
In the paper, the authors propose an efficient two-factor localized authentication scheme suitable for WLAN roaming. The proposed authentication scheme can greatly improve the security compared...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
MIMO Performance of Diversity-Rich Compact Six-Port Dielectric Resonator Antenna Arrays in Measured Indoor Environments at 2.65 GHz
May 2009
MIMO systems can achieve linear capacity gain proportional to the number of antennas. However, the compactness of terminal devices limits the number of spatial degrees of freedom in such systems,...
Provided by Lund University
-
White Papers
Closely Located Dual PIFAs With T-Slot Induced High Isolation for MIMO Terminals
Jul 2011
This paper presents an efficient technique to enhance the isolation between two closely spaced PIFAs for MIMO mobile terminals. The proposed decoupling method is based on a Tshape slot impedance...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
SFRIC: A Secure Fast Roaming Scheme in Wireless LAN Using ID-Based Cryptography
Jun 2007
In a wireless network composed of multiple access points, a long delay during roaming from one access point to another may cause a disruption for streaming traffic. Roaming in wireless LAN is...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
System-Level Design of a Delta-Sigma Modulator Target for Next Generation Wireless Application
Mar 2010
Due to the increasing digital processing speed in the DSP, communication data is transferred in a channel bandwidth of 20 MHz according to the IEEE 802.11e standard. It is reasonable to believe...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Study of Best-Effort VoIP Handovers Between WLAN and EVDO Networks
Jun 2007
The IEEE 802.11 based Wireless LANs (WLANs) have emerged as a viable technology for supporting real-time applications such as Voice over IP (VoIP). Even the Personal Digital Assistants and...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
MIMO Wireless Linear Precoding
Sep 2007
The benefits of using multiple antennas at both the transmitter and the receiver in a wireless system are well established. Multiple-Input Multiple-Output (MIMO) systems enable a growth in...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Handoff Triggering and Network Selection Algorithms for Load-Balancing Handoff in CDMA-WLAN Integrated Networks
Aug 2008
This paper proposes a novel vertical hand-off algorithm between WLAN and CDMA networks to enable the integration of these networks. The proposed vertical hand-off algorithm assumes a hand-off...
Provided by Texas A&M University
-
White Papers
Multiple-Antenna Interference Cancellation for WLAN With MAC Interference Avoidance in Open Access Networks
Sep 2007
The potential of multi-antenna interference cancellation receiver algorithms for increasing the uplink throughput in WLAN systems such as 802.11 is investigated. The Medium Access Control (MAC) in...
Provided by Bell
-
White Papers
Modified Isochronous Coordination Function for Enhancement of VoIP Call Capacity Over IEEE 802.11 WLAN
Oct 2007
VoIP over IEEE 802.11 Wireless Local Area Network (WLAN) is growing very fast and is providing a cost effective alternative for voice communications. WLANs were initially set up to handle bursty...
Provided by Hindawi Publishing
-
White Papers
Energy-Efficient Bandwidth Allocation for Multiuser Scalable Video Streaming Over WLAN
Oct 2007
The authors consider the problem of packet scheduling for the transmission of multiple video streams over a Wireless Local Area Network (WLAN). A cross-layer optimization framework is proposed to...
Provided by Hindawi Publishing
-
White Papers
Distortion-Based Link Adaptation for Wireless Video Transmission
Mar 2008
Wireless Local Area Networks (WLANs) such as IEEE 802.11a/g utilise numerous transmission modes, each providing different throughputs and reliability levels. Most link adaptation algorithms...
Provided by Hindawi Publishing
-
White Papers
Efficient MAC Protocol for Subcarrier-Wise Rate Adaptation Over WLAN
May 2010
While bit-loading algorithms over wireless systems have been extensively studied, the development of a protocol which implements bit-loading-based rate adaptation over wireless systems has not...
Provided by Hindawi Publishing
-
White Papers
Cost-Based Vertical Handover Decision Algorithm for WWAN/WLAN Integrated Networks
May 2009
Next generation wireless communications are expected to rely on integrated networks consisting of multiple wireless technologies. Heterogeneous networks based on Wireless Local Area Networks...
Provided by Hindawi Publishing
-
White Papers
Secure and Efficient Data Transmission Over Body Sensor and Wireless Networks
Feb 2008
This paper addresses the transmission of medical and context-aware data from mobile patients to healthcare centers over heterogeneous wireless networks. A handheld device, called Personal Wireless...
Provided by Hindawi Publishing
-
White Papers
Techniques for Improving the Accuracy of 802.11 WLAN-Based Networking Experimentation
Dec 2009
Wireless networking experimentation research has become highly popular due to both the frequent mismatch between theory and practice and the widespread availability of low-cost WLAN cards....
Provided by Hindawi Publishing
-
White Papers
Linking Users' Subjective QoE Evaluation to Signal Strength in an IEEE 802.11b/g Wireless LAN Environment
Feb 2010
Although the literature on Quality of Experience (QoE) has boomed over the last few years, only a limited number of studies have focused on the relation between objective technical parameters and...
Provided by Hindawi Publishing
-
White Papers
Experimental Validation of a Coexistence Model of IEEE 802.15.4 and IEEE 802.11b/g Networks
May 2009
As IEEE 802.15.4 Wireless Sensor Networks (WSNs) and IEEE 802.11b/g Wireless Local Area Networks (WLANs) are often collocated, coexistence issues arise as these networks share the same 2.4GHz...
Provided by Hindawi Publishing
-
White Papers
Weighted Window and Class-Based Weighted Window Methods for Per-Station TCP Fairness in IEEE 802.11 WLANs
Oct 2010
TCP unfairness problem in access networks using the 802.11 has been studied by many researchers. Their solutions required that the existing MAC protocol be modified. However, since they did not...
Provided by Hindawi Publishing
-
White Papers
Hybrid Polling Method for Direct Link Communication for IEEE 802.11 Wireless LANs
Aug 2008
The direct link communication between STAtions (STAs) is one of the techniques to improve the MAC performance of IEEE 802.11 infrastructure networks. For the efficient direct link communication,...
Provided by Hindawi Publishing
-
White Papers
Cross-Layer Measurement on an IEEE 802.11g Wireless Network Supporting MPEG-2 Video Streaming Applications in the Presence of Interference
Jan 2010
The performance of wireless local area networks supporting video streaming applications, based on MPEG-2 video codec, in the presence of interference is here dealt with. IEEE 802.11g standard...
Provided by Hindawi Publishing
-
White Papers
A Token-Based Scheduling Scheme for WLANs and Its Performance Analysis
Jun 2007
Most of the existing WLAN MAC protocols can only provide limited service differentiation. In this paper, the authors propose a novel token-based scheduling scheme for precise and quantitative...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Energy Management in Solar Powered WLAN Mesh Nodes Using Online Meteorological Data
Jun 2007
Solar powered WLAN mesh nodes are assigned a solar panel and battery size based on power consumption profiles. If future loading exceeds the design target, then a node may not be able to achieve...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
RSS Based Vertical Handoff Algorithms for Heterogeneous Wireless Networks - A Review
Aug 2011
Heterogeneous networks are integrated in fourth generation. To have seamless communication and mobility between these heterogeneous wireless access networks, support of vertical handoff is...
Provided by The Science and Information Organization
-
White Papers
Five Tips for Safer Wireless LAN
Dec 2011
Wireless local area networks, or WLANs, provide homes and businesses with convenient and easy access to the Internet. But wireless networks can leave you vulnerable if you don't secure them...
Provided by Astaro
-
White Papers
IEEE 802.11n Outdoor Performance
Sep 2009
The MIMO (Multiple Input, Multiple Output) technology described in the IEEE 802.11n standard transforms the disadvantages of multipath propagation in wireless LAN transmissions into an advantage...
Provided by LANCOM Systems
-
White Papers
Albert School District: A Customer Success Story
Dec 2011
Albert School District gets a lesson in wireless security; Sophos Astaro Wireless Security provides simple management and reliable Internet access.
Provided by Astaro
-
White Papers
Global Frontrunner Routing Algorithm (GFRA) for V2V Communication in VANETS
Jul 2011
VANET (Vehicular Ad hoc NETwork) is the emerging research area that making the phrase "Network on Wheel" true. In this new age network the basic WLAN (IEEE 802.11) standard is used. As the...
Provided by Kalasalingam University
-
White Papers
Interference-Aware Topology Control for Wireless Personal Area Networks
Oct 2008
Recently, many wireless devices operate in the 2.4GHz ISM band. Wireless Personal Area Network (WPAN) can suffer significant performance degradation due to the interference of WLAN and Bluetooth....
Provided by Konkuk University
-
Case Studies
The Goodyear Tire & Rubber Company Uses WildPackets' OmniPeek
Jan 2008
Goodyear manufactures tires, engineered rubber products and chemicals in more than 80 facilities in 28 countries. The company wanted to consolidate its set of network monitoring, analysis, and...
Provided by WildPackets
