Πλοήγηση ανά Θέμα "Standards"
Αποτελέσματα 1-20 από 28
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Competition and cooperation in wireless access misbehavior
(2011)With the proliferation of access points and terminals, wireless access misbehavior emerges as important means of protocol misuse, whereby network entities aim at obtaining higher channel share than the one in legitimate ... -
Contention and traffic load-aware association in IEEE 802.11 WLANs: Algorithms and implementation
(2011)Efficient association of a station with the appropriate access point has always been a challenging problem. The standard approach of considering only the Received Signal Strength, has recently been substituted by more ... -
A demonstration of video over a user centric prioritization scheme for wireless LANs
(2008)Due to the unreliable nature of the wireless medium, provisioning of the Quality of Service (QoS) in wireless LANs is by far more complicated than in wired networks. In this demo we show the efficiency of a new QoS support ... -
A demonstration of video over an IEEE 802.11 compliant version of the enhanced-backpressure algorithm
(2012)This demo presents a novel routing and scheduling scheme, named Enhanced-Backpressure over WiFi (EBoW), that obviously outperforms the dominant approach of a shortest-path routing (SRCR) combined with the classic CSMA/CA ... -
Development of an advanced embedded system for description of electrophysiological phenomena in ornamental plants by biosignals processing
(2011)Extracellular electrical signals that are produced from plants have different patterns depending on factors that may cause stress such as water deficiency, nutrient shortages, high salinity level in the root environment ... -
Energy efficient spectrum allocation and mode selection for mission-critical D2D communications
(2016)Device-to-device (D2D) communications is considered as a key enabling technology in future cellular networks and thus, it has become an intriguing topic for research. It refers to an innovative technology that enables User ... -
Fast power-up active link protection in autonomous distributed transmitter power control
(2008)In this work, we propose an enhancement to the DPC/ALP (Distributed Power Control with Active Link Protection) algorithm that allows fast power ramp-up without compromising the ALP guarantee. The original DPC algorithm was ... -
FIJI: Fighting implicit jamming in 802.11 WLANs
(2009)The IEEE 802.11 protocol inherently provides the same long-term throughput to all the clients associated with a given access point (AP). In this paper, we first identify a clever, low-power jamming attack that can take ... -
Flow-Control Policies for Wireless Sequencer-Based Causal and Total Order Communication
(2015)Many embedded wireless systems can benefit from causal and totally ordered communication (CATOC) in order to achieve reliability and logical consistency at the application level. In this paper, we present a sequencer-based ... -
Forging client mobility with OpenFlow: An experimental study
(2016)The wide proliferation of IEEE 802.11 compatible devices and the provisioning of costless Internet connectivity in most cases, have created fertile ground for investigating seamless client mobility and handoff management ... -
Implementation and end-to-end throughput evaluation of an IEEE 802.11 compliant version of the enhanced-backpressure algorithm
(2012)Extensive work has been done in wireless multihop routing with several ideas based on shortest path or load balancing routing algorithms, that aim at minimizing end-to-end delay or maximizing throughput respectively. ... -
Interference mitigation in co-working IEEE 802.11n WLANs
(2009)In a densely deployed Wireless Local Area Network (WLAN) environment, Access Points (APs) could be so close to cause significant channel interference. In the next generation IEEE 802.11n WLANs, inter-cell interference ... -
Joint beamforming and channel selection for multicast IEEE 802.11n WLANs
(2008)Multicast transmission over WLANs is becoming a popular application. IEEE 802.11n technology is developed due to the ever increasing demand for higher data rate and Quality of Service (QoS). However, there is an unmanaged ... -
Joint multicast beamforming and admission control
(2007)Wireless multicasting is quickly emerging as an important enabling technology for mass content distribution to mobile hand-held devices. With channel state information at the transmitter, it is possible to tailor transmissions ... -
LAC: Load-aware channel selection in 802.11 WLANs
(2008)Dense deployments of hybrid WLANs result in high levels of interference and low end-user throughput. Many frequency allocation mechanisms for WLANs have been proposed by a large body of previous studies. However, none of ... -
Local buckling limits of tubular sections in bending and compression
(2010)In design standards and recommended practices a large scatter can be observed in local buckling limits. Some can be explained from different design focuses and safety requirements but much is not clear. The traditional ... -
Low-complexity beamforming techniques for IEEE 802.11n WLANs
(2009)The impetus of the present study is to describe a downlink beamforming method that increase spectrum efficiency and significantly reduces implementation complexity and power consumption compare to beamforming technique at ... -
Measuring LTE and WiFi coexistence in Unlicensed spectrum
(2017)The exponential growth in mobile services demand, along with the scarce licensed spectrum in the sub-6GHz bands, mandate the exploitation of bands other than the traditionally used by mobile broadband technologies. An ... -
Measuring safety levels in playgrounds using environment assessment scales: The issue of playground safety in Greece
(2011)Playgrounds beget an unrivalled context which, through play activity, can foster children's growth. The foremost function of all playgrounds is to provide for safety. In the present study, our primary focus is to determine ... -
Multicast transmission over IEEE 802.11n WLAN
(2008)With the advent of low-cost WLAN devices, the delivery of multimedia content is highly desirable. Such applications require high throughput and near-real time for quality viewing. The use of next-generation WLAN 802.11n ...