Topic
Frame aggregation
About: Frame aggregation is a research topic. Over the lifetime, 487 publications have been published within this topic receiving 14295 citations.
Papers published on a yearly basis
Papers
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Journal Article•
TL;DR: Simulation results show that the frame aggregation mechanism can improve system throughput, hence increasing the number of admitted users and the effectiveness of the proposed method is verified by simulations.
Abstract: We firstly introduce the principle of frame aggregation mechanism in IEEE802.11n,and then analyze the performance of video transmission using frame aggregation mechanism.Simulation results show that the frame aggregation mechanism can improve system throughput,hence increasing the number of admitted users.We also propose an adaptive frame aggregation mechanism by dynamically selecting the subframe size and retry times according to the channel condition to improve the performance of video transmission,and finally the effectiveness of the proposed method is verified by simulations.
1 citations
Dissertation•
01 Dec 2010
1 citations
01 Jan 2016
TL;DR: The mechanism decreases the number of expired packets during the retransmission by allowing the packets to be transmitted at an earlier time before their expiration time and reduces the packet loss ratio and increasing the system throughput.
Abstract: The IEEE 802.11n standard has introduced frame aggregation technique which can reduce the overhead and increases the channel utilization efficiency. However, the standard does not address the packet scheduling during the aggregation, and the aggregation scheme causes additional delays, particularly when waiting for other packets in the queue to construct the aggregated frame. Furthermore, the channel status should be addressed to improve the system performance. In this paper, we proposed a scheduling scheme called Dynamic Sensing Mechanism that handles the influence of network channel conditions during the transmission process. The mechanism decreases the number of expired packets during the retransmission by allowing the packets to be transmitted at an earlier time before their expiration time. The simulation results show an outstanding performance improvement for the proposed scheduling mechanism by reducing the packet loss ratio and increasing the system throughput.
1 citations
08 Sep 2016
TL;DR: It is found that even in the simplest scenario, where new factors are disabled, most of the methods discussed perform so below expectations, supporting the claim that the wireless network environment is a major challenge for the development of this type of technique.
Abstract: The estimation of capacity and available bandwidth in computer networks have been the subject
of several studies in recent years, mainly because of changing technologies and increasing
use of the Internet. Such techniques are of great importance to be able to make better use of
data transmission, avoiding both underuse as resource depletion. There are numerous uses
for bandwidth estimation techniques, among which we can mention textit stream multimedia
applications textit peer-to-peer, routing protocols based on available bandwidth, quality of
service, endtoendtransportprotocols, amongothers. Withthegrowinginterestinthesetypesof
applications, especially in video and audio transmission, bandwidth estimation has been of great
interest to researchers. The estimation of available bandwidth in wireless networks is itself a
challenge for researchers and the new IEEE 802.11n standard has brought new mechanisms to
optimize the transmission of data, thus achieving higher rates. However, these factors contribute
to that existing techniques encounter problems when trying to estimate the available bandwidth,
thus causing results that fall short. This research experimentally demonstrates the influence
of new factors added by the new standard, such as frame aggregation and channels in active
techniques for available bandwidth estimation. It’s possible see, then, that all has its diminished
accuracy, causing estimation errors. We found that even in the simplest scenario, where new
factors are disabled, most of the methods discussed perform so below expectations, supporting
the claim that the wireless network environment is a major challenge for the development of this
type of technique . The YAZ estimation technique was more robust than the others, approaching
the reference values in almost all proposed scenarios, except for the frame aggregation. In a
more specific analysis of their algorithm, we can demonstrate why the error in the result of the
available bandwidth estimation occurs in this context.
1 citations
01 Jan 2021
TL;DR: In this article, the authors proposed and implemented the novelty adaptive mapping of cross-layers scheme for height the Quality of Services for transmitting the scalable video streams in IEEE 802.11ac wired less environment.
Abstract: The audio transmission over WLAN requires the better Quality of Service (QoS). In this paper, we are proposing and implementing the novelty adaptive mapping of cross-layers scheme for height the Quality of Services for transmitting the scalable video streams in IEEE 802.11ac wired less environment tends to approximating of the AC’s queue length and delaying of the timely constraining of the streams for which it is to be transmitted. The results clearly states that performing of propose dynamic cross-layers mapping is better with respect to the mapping of static cross-layers scheme.