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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TL;DR: This work analyzes the performance characteristics of a Wi-Fi bottleneck, investigating the throughput and the latency obtained with the frame aggregation logic, and forms the expression for data throughput and RTT as a function of the aggregation size.
Abstract: Novel congestion control algorithms, like Google’s TCP BBR, have been designed using wired-bottleneck models. Therefore, they do not achieve efficient performance over Wi-Fi paths due to frame-aggregation mechanisms adopted by standard IEEE 802.11n/ac/ax technologies that break the standard model. In this work, we analyze the performance characteristics of a Wi-Fi bottleneck, investigating the throughput and the latency obtained with the frame aggregation logic. In particular, we formulate the expression for data throughput and RTT as a function of the aggregation size. Then, through experimental results, we validate the model on a real testbed with two different types of Wi-Fi bottlenecks.
4 citations
TL;DR: This letter shows how the PSM proposed by the Wi-Fi Alliance renders frame aggregation ineffective, and proposes a novel opportunistic scheduler that restores the benefits of frame aggregation whilst ensuring stations have minimal energy expenditure.
Abstract: This letter highlights a key problem that arises when frame aggregation, a popular method for boosting VoIP capacity, is used in Wireless Local Area Networks (WLANs) that employ asynchronous power save mode (PSM). Specifically, it shows how the PSM proposed by the Wi-Fi Alliance renders frame aggregation ineffective. It then proposes a novel opportunistic scheduler that restores the benefits of frame aggregation whilst ensuring stations have minimal energy expenditure.
4 citations
01 Oct 2019
TL;DR: The proposed FAA MAC protocol classifies different traffic data with similar QoS requirements into one data queue and aggregates several small MAC Protocol Data Units into one Physical Layer Service Data Unit (PSDU) in each queue in the light of the maximum tolerance delay of different services and the current survival time of different types of traffic data.
Abstract: Wireless Body Area Networks (WBANs)support low delay and low energy consumption data transmissions for real-time health monitoring. There is a variety of traffic types with different frame lengths in WBANs. However, transmitting short frames brings more overhead such as control frames, which decreases network throughput and transmission efficiency, also increases energy consumption. In this paper, we propose a Medium Access Control (MAC)Frame Aggregation Approach (FAA)based on IEEE 802.15.6 to guarantee Quality of Service (QoS)provision. The proposed FAA MAC protocol classifies different traffic data with similar QoS requirements into one data queue. Then, the FAA aggregates several small MAC Protocol Data Units (MPDU)into one Physical Layer Service Data Unit (PSDU)in each queue in the light of the maximum tolerance delay of different services and the current survival time of different types of traffic data. We also design an aggregation algorithm to perform the aggregation procedure. The simulation results conducted on the Castalia show that our proposed FAA highly improves the network throughput and decreases the average packet delay compared with IEEE 802.15.6.
4 citations
TL;DR: The results show the proposed scheme has notably better goodput than existing schemes such as SW and ASR-ARQ.
Abstract: This letter proposes an efficient frame aggregation transmission scheme based on random linear network coding in 802.11n/ac networks. The proposed scheme dynamically utilizes either systematic coding or mixed generation coding for network changing characteristics to maximize wireless bandwidth use. A simple and accurate analytical model for performance analysis of the proposed scheme is developed and verified via simulations. The results show the proposed scheme has notably better goodput than existing schemes such as SW and ASR-ARQ.
4 citations
23 May 2016
TL;DR: This paper proposes a paradigm of parallel directional transmission, named cross talk MAC (CTMAC), for enhancing the spatial reuse of mm-Wave directional wireless networks, and shows that the proposed CTMAC dominates the conventional scheme in nearly all scenarios.
Abstract: The abundance of unlicensed frequency resources in the mm-Wave frequency range, especially round 60 GHz bands, have a great potential to fulfill the increasing demands of high speed wireless applications. In mm-Wave wireless communication systems, directional transmission technologies become an inherent feature to compensate the high pathloss. The frame aggregation scheme is designed to maximize network throughput and efficiency for packet-based systems by grouping and transmitting multiple packets in a single channel access. In this paper, by jointly considering the benefits of directional transmission and frame aggregation, we propose a paradigm of parallel directional transmission, named cross talk MAC (CTMAC), for enhancing the spatial reuse of mm-Wave directional wireless networks. Enabled by its packet level channel access algorithm, CTMAC allows parallel transmissions even under the strongest interfered topologies to enhance the performance of the mm-Wave wireless personal area network. The numeric results show that the proposed CTMAC dominates the conventional scheme in nearly all scenarios. Especially, CTMAC outperforms the conventional scheme up to 2-fold with good antenna directivity.
4 citations