Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- 802.11e (2)
- RARE (2)
- Routing protocols (2)
- WMNs (2)
- DFIG (1)
-
- EDCA (1)
- Mixed voice data transmission (1)
- OLSR (1)
- Optimized Link State Routing (1)
- Paralled multimedia streaming sessions (1)
- Power Quality (1)
- Resource Aware Routing for mEsh (1)
- Resource aware routing for mEsh (1)
- TXOP (1)
- Video frame differentiation (1)
- Voice traffic (1)
- Voltage Unbalance (1)
- WLANs (1)
- Wind Energy (1)
- Wind Turbines (1)
Articles 1 - 5 of 5
Full-Text Articles in Engineering
The Capability Of The Edca Mechanism To Support Voice Traffic In A Mixed Voice/Data Transmission Over 802.11e Wlans: An Experimental Investigation, Miroslaw Narbutt, Mark Davis
The Capability Of The Edca Mechanism To Support Voice Traffic In A Mixed Voice/Data Transmission Over 802.11e Wlans: An Experimental Investigation, Miroslaw Narbutt, Mark Davis
Conference papers
In this paper we experimentally evaluate the capability of the EDCA mechanism to support voice traffic in a mixed voice/data transmission over 802.11e WLANs. In particular we investigate how real-time voice transmission can be supported by tuning four EDCA parameters, namely AIFSN, CWmin, CWmax and TXOP and how this impacts on background data transmission. The experimental set-up involves fifteen VoIP terminals sending bi-directional traffic between wired and wireless subnets and another station injecting various types of heavy background load to the wireless subnet. End-to-end voice transmission quality is predicted from time-varying transmission impairments with the use of the latest Appendix …
Analysis Of A Variable Speed Double-Fed Induction Generator Wind Turbine During Network Voltage Unbalance Conditions., Joseph Kearney, Michael Conlon
Analysis Of A Variable Speed Double-Fed Induction Generator Wind Turbine During Network Voltage Unbalance Conditions., Joseph Kearney, Michael Conlon
Conference papers
The behaviour of Double-Fed Induction Generators to supply network voltage unbalance is investigated. The paper shows the effects that voltage unbalance can have on a DFIG, using Matlab/Simulink. The results from simulations show that voltage unbalance affects both the induction generator and the rotor converter, due to the high unbalanced currents generated. The ability to modify the control strategy of a DFIG to compensate for voltage unbalance is outlined and simulations show the improvements to the performance of the DFIG.
Video Frame Differentiation For Streamed Multimedia Over Heavilty Loaded Ieee 802.11e Wlan Using Txop, Nicola Cranley, Mark Davis
Video Frame Differentiation For Streamed Multimedia Over Heavilty Loaded Ieee 802.11e Wlan Using Txop, Nicola Cranley, Mark Davis
Conference papers
In this paper we perform an experimental investigation of using video frame differentiation in conjunction with the TXOP facility to enhance the transmission of parallel multimedia streaming sessions in IEEE 802.11e. The delay constraints associated with the audio and video streams that comprise a multimedia session pose the greatest challenge since real-time multimedia is particularly sensitive to delay as the packets require a strict bounded end-to-end delay. Video streaming applications are considered to be bursty. This burstiness is due to the frame rate of vide., the intrinsic hierarchical structure of the constituent video frame types. The TXOP facility is particularly …
Rare: Resource Aware Routing For Mesh, Karol Kowalik, Brian Keegan, Mark Davis
Rare: Resource Aware Routing For Mesh, Karol Kowalik, Brian Keegan, Mark Davis
Conference papers
An important element of any routing protocol used for Wireless Mesh Networks (WMNs) is the link cost function used to represent the radio link characteristic. The majority of the routing protocols for WMNs attempt to accurately characterise the radio link quality by constructing the link cost function from the measurements obtained using active probing techniques, which introduces overhead. In this paper we propose a new approach called Resource Aware Routing for mEsh (RARE) which instead employs passive monitoring to gather radio link information. This results in a smaller overhead than the other methods that require active network probing, and is …
Making Olsr Aware Of Resources, Karol Kowalik, Brian Keegan, Mark Davis
Making Olsr Aware Of Resources, Karol Kowalik, Brian Keegan, Mark Davis
Conference papers
An important element of any routing protocol used for Wireless Mesh Networks (WMNs) is the link cost function used to represent the radio link characteristic. The majority of the routing protocols for WMNs attempt to accurately characterise the radio link quality by constructing the link cost function from the measurements obtained using active probing techniques which introduces overhead. In this paper we present a modified version of the Optimized Link State Routing (OLSR) protocol which uses the link cost function values provided the Resource Aware Routing for mEsh (RARE) module which employs passive monitoring to gather radio link information. This …