Topic
Frame aggregation
About: Frame aggregation is a research topic. Over the lifetime, 487 publications have been published within this topic receiving 14295 citations.
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22 May 2013
TL;DR: This paper investigates a receiver side network stack design that allows reliability and aggregation features to be switched off in the MAC and reduces the overhead cost significantly over MAC frame aggregation and increases throughput.
Abstract: The robust and efficient streaming of video over wireless networks poses serious challenges. Inherent instabilities in the wireless medium lead to large, highly variable delay, throughput variations, and data loss. To cope with this problem the wireless MAC has incorporated many features such as reliability and aggregation. These features allow transport protocols such as TCP to work by hiding the frame losses from layers above the MAC. The problem is that in doing so they create overhead leading to loss of throughput. In this paper, we investigate a receiver side network stack design that allows these features to be switched off in the MAC. We instead provide reliability and aggregation features at the session layer. Our network stack design reduces the overhead cost significantly over MAC frame aggregation and increases throughput. We demonstrate the throughput advantages of our approach in testbed and emulation and analyze the effects of overhead created by our system.
2 citations
Patent•
22 Dec 2010
TL;DR: In this paper, a frame aggregation control method of a WLAN (Wireless Local Area Network) is proposed, which comprises the following steps of: acquiring the quality of a current wireless transmission environment by a transmitting end; and judging whether to start the frame aggregation function or not according to the quality.
Abstract: The invention provides a frame aggregation control method of a WLAN (Wireless Local Area Network). The method comprises the following steps of: acquiring the quality of a current wireless transmission environment by a transmitting end; and judging whether to start the frame aggregation function or not according to the quality of the wireless transmission environment. The invention also provides a frame aggregation control device of the WLAN. The method and the device of the invention can flexibly adjust whether to start the frame aggregation function or not according to the conditions of the wireless environment where WLAN equipment is arranged, thereby improving the data transmission reliability.
2 citations
TL;DR: This paper proposes a scheme that estimates the expected throughput of an 802.11 device in a non-intrusive manner and can be implemented practically in any system and its resource overhead is very low.
2 citations
TL;DR: A standard compliant, Practical, Near-Optimal Frame Aggregation algorithm (PNOFA) is developed and evaluated, showing that across a variety of devices and scenarios PNOFA outperforms existing state-of-the-art algorithms and obtains throughputs that are within 97% of those obtained using the statistically optimal algorithm.
2 citations
TL;DR: A joint or cross layer optimization of Smart Grid home/building area network based on IEEE 802.11 standard using RIVERBED OPNET network design and simulation tool to serve as a comprehensive analysis and performance enhancement of communication standard suitable for Smart Grid HAN applications.
Abstract: An electrical “Grid” is a network that carries electricity from power plants to customer premises. Smart Grid is an assimilation of electrical and communication infrastructure. Smart Grid is characterized by bidirectional flow of electricity and information. Smart Grid is a complex network with hierarchical architecture. Realization of complete Smart Grid architecture necessitates diverse set of communication standards and protocols. Communication network protocols are engineered and established on the basis of layered approach. Each layer is designed to produce an explicit functionality in association with other layers. Layered approach can be modified with cross layer approach for performance enhancement. Complex and heterogeneous architecture of Smart Grid demands a deviation from primitive approach and reworking of an innovative approach. This paper describes a joint or cross layer optimization of Smart Grid home/building area network based on IEEE 802.11 standard using RIVERBED OPNET network design and simulation tool. The network performance can be improved by selecting various parameters pertaining to different layers. Simulation results are obtained for various parameters such as WLAN throughput, delay, media access delay, and retransmission attempts. The graphical results show that various parameters have divergent effects on network performance. For example, frame aggregation decreases overall delay but the network throughput is also reduced. To prevail over this effect, frame aggregation is used in combination with RTS and fragmentation mechanisms. The results show that this combination notably improves network performance. Higher value of buffer size considerably increases throughput but the delay is also greater and thus the choice of optimum value of buffer size is inevitable for network performance optimization. Parameter optimization significantly enhances the performance of a designed network. This paper is expected to serve as a comprehensive analysis and performance enhancement of communication standard suitable for Smart Grid HAN applications.
2 citations