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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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Patent
05 Nov 2004
TL;DR: In this paper, an aggregated frame descriptor is proposed for frame aggregation into a physical layer packet, which consists of a header comprising logical-layer and sub-frame protocol information (1314 (N)), optional verification information to verify the subframe data, and aggregated user data (1315 (N)).
Abstract: A frame format for frame aggregation into a physical-layer packet employs an aggregated frame descriptor (1310) appended to one or more sub-frames (1311 (1) - (N)). Each sub-frame comprises a header comprising logical-layer and sub-frame protocol information (1314 (N)), optional verification information to verify the sub-frame data (1316 (N)), and aggregated user data (1315 (N)). The aggregated frame descriptor includes information identifying the packet as conforming to an aggregated frame format, and sub-frame descriptors (1320 (1) - (N)) identifying at least one of a position (1337 (N)), a length (1338 (N)), and a data rate of a corresponding sub-frame. The aggregated frame is then formed into a physical layer packet for transmission through a medium.

4 citations

Proceedings ArticleDOI
11 Apr 2016
TL;DR: This work suggests increasing traffic burstiness deliberately to allow for higher frame aggregation at the physical layer, which reduces the number of medium accesses, and thus decreases the probability of collision in case of deafness in multi-gigabit-per-second networks.
Abstract: Multi-gigabit-per-second data rates in millimeter-wave networks can result in an excessive amount of channel accesses. Transmitting a single packet at such rates often only requires a few microseconds. In contrast, the medium access control (MAC) overhead is about 20× larger. This is particularly harmful if one or more nodes are deaf due to the use of directional antennas. Deaf nodes cannot overhear ongoing transmissions, and thus cause a high number of collisions, exacerbating MAC overhead even more. In addition, the contention window of deaf nodes becomes very large since their transmissions often fail, resulting in unfairness. To mitigate this issue, we suggest increasing traffic burstiness deliberately to allow for higher frame aggregation at the physical layer. This reduces the number of medium accesses, and thus decreases the probability of collision in case of deafness. We adapt existing theoretical models to our scenario to show the effectiveness of this strategy. Moreover, we validate our scheme in a practical testbed operating in the 60 GHz band. In particular, our evaluation shows that our strategy improves fairness by 20% and throughput by 66% compared to a system that does not exploit deliberate burstiness.

4 citations

Patent
30 Dec 2015
TL;DR: In this paper, an adaptive frame length method based on block acknowledgment in a wireless network is proposed, where the current channel state is judged instantly through the information in the block acknowledgment, the frame length is adjusted adaptively to an optimal size, on the basis of the existing frame aggregation and block acknowledgment technology, the throughput and channel utilization efficiency are further improved, the adaptive module complexity is reduced, thus the channel has high flexibility and adaptivity, and thus the overall transmission performance of a wireless LAN is improved.
Abstract: The present invention relates to an adaptive frame length method based on block acknowledgment in a wireless network. The adaptive frame length technology based on block acknowledgment is introduced into an ultra-high-speed wireless LAN, the current channel state is judged instantly through the information in the block acknowledgment, the frame length is adjusted adaptively to an optimal size, on the basis of the existing frame aggregation and block acknowledgment technology, the throughput and channel utilization efficiency are further improved, the adaptive module complexity is reduced, thus the channel has high flexibility and adaptivity, and thus the overall transmission performance of a wireless LAN is improved. The method has high flexibility and scalability and can be widely applied to various wireless communication systems.

4 citations

Patent
14 Aug 2013
TL;DR: In this article, an efficient frame aggregation transmission scheme with network coding to improve transmission efficiency in 802.11n/ac networks is proposed. But the proposed scheme can dynamically utilize either modified systematic network coding or mixed generation coding to efficiently transmit the aggregated frame.
Abstract: The invention directed to an efficient frame aggregation transmission scheme with network coding to improve transmission efficiency in 802.11n/ac networks. According to network conditions, the proposed scheme can dynamically utilizes either modified systematic network coding or mixed generation coding to efficiently transmit the aggregated frame.

4 citations

Proceedings ArticleDOI
02 Jul 2013
TL;DR: This paper proposes a hybrid solution combining contention window control with frame aggregation, which assures higher channel access opportunity for high-rate STAs, without resulting in the unnecessary high collision probability.
Abstract: This paper deals with fairness among stations (STAs) in multi-rate wireless local area networks (WLANs). If STAs compete for channel access according to IEEE 802.11 distributed coordination function, they have comparable opportunity of channel access, regardless of transmission rate. Accordingly, high-rate STAs achieve throughput similar to low-rate STAs, which is well known as performance anomaly. To mitigate this problem, we propose a hybrid solution combining contention window control with frame aggregation. By controlling contention window of each STA, the proposed mechanism assures higher channel access opportunity for high-rate STAs, without resulting in the unnecessary high collision probability. At the same time, it controls the frame aggregation factor based on the transmission rate of each STA, in order to tightly assure perstation fairness in terms of channel occupation time. To validate the proposed mechanism, we perform intensive simulation which confirms its outstanding performance in terms of throughput, fairness, and utilization.

4 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20221
202114
202023
201922
201826
201735