Frame Aggregation in Wireless Networks: Techniques and Issues

The technological growth combined with the exponential increase of wireless traffic are pushing the wireless community to investigate solutions to maximally exploit the available spectrum. Among the proposed solutions, the operation of Long Term Evolution (LTE) in the unlicensed spectrum (LTE-U) has attracted significant attention. Recently, the 3rd Generation Partnership Project announced specifications that allow LTE to transmit in the unlicensed spectrum using a Listen Before Talk (LBT) procedure, respecting this way the regulator requirements worldwide. However, the proposed standards may cause coexistence issues between LTE and legacy Wi-Fi networks. In this article, it is discussed that a fair coexistence mechanism is needed to guarantee equal channel access opportunities for the co-located networks in a technology-agnostic way, taking into account potential traffic requirements. In order to enable harmonious coexistence and fair spectrum sharing among LTE-U and Wi-Fi, an adaptive LTE-U LBT scheme is presented. This scheme uses a variable LTE transmission opportunity (TXOP) followed by a variable muting period. This way, co-located Wi-Fi networks can exploit the muting period to gain access to the wireless medium. The scheme is studied and evaluated in different compelling scenarios using a simulation platform. The results show that by configuring the LTE-U with the appropriate TXOP and muting period values, the proposed scheme can significantly improve the coexistence among LTE-U and Wi-Fi in a fair manner. Finally, a preliminary algorithm is proposed on how the optimal configuration parameters can be selected towards harmonious and fair coexistence.

show abstract

“…802.11n/ac [27]), often it is not used depending on the traffic type (e.g. low latency constraints) [28].…”

Section: Problem Definition and Proposal Descriptionmentioning

confidence: 99%

An adaptive LTE listen-before-talk scheme towards a fair coexistence with Wi-Fi in unlicensed spectrum

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In symmetric multiprocessing the major architectural bottleneck is the internal bus which connects the processors and peripherals to the memory using an arbitrary network of shared channels [5,6]. In most cases, the bus bandwidth becomes a dominant barrier because of improper bandwidth allocation.…”

Section: Introductionmentioning

confidence: 99%

An intelligent arbiter for maximum CPU utilization, fair bandwidth allocation and low latency: Survey

Akhtar

Sidek

2012

2012 IEEE 8th International Colloquium on Signal Processing and Its Applications

View full text Add to dashboard Cite

Accelerated advancement in the world of microprocessor necessitates solving the bus contention in a most efficient manner. The major challenge is to reduce the latency of the system and to achieve a fair bandwidth allocation using maximum CPU utilization. Combination of Adaptive Arbitration algorithm and the processors according to their traffic behavior can be one of the feasible options to tackle the aforesaid problems due to its fair bandwidth allotment and low system latency. This article provides a comprehensive picture of research and developments in dynamic arbitration algorithm for masters according to the traffic behavior. The papers published in standard journals are reviewed, classified according to their objectives and presented with a general conclusion. Keywords-adaptive arbiter; fair bandwidth; low latency; system-onchip; traffic behaviorI.978-1-4673-0961-5/12/$31.00 ©2012 IEEE

show abstract

“…1. In IEEE802.11, the throughput does not scale well with increasing the physical rate (Xiao and Rosdahl, 2003;Milad et al, 2013a;Saif et al, 2011;Li et al, 2009;Abichar and Chang, 2013). However, in IEEE802.11n, the throughput achieves 100Mbps at a MAC layer.…”

Section: Introductionmentioning

confidence: 99%

“…If many stations have started transmitting the data with BAR at the same time, the collections will occur. Moreover, when each station sends the data with BAR, the receiver should wait to detect the collision first and then send the block acknowledgment (Saif et al, 2011;Ghaleb et al, 2012).…”

Section: Block Acknowledgmentmentioning

confidence: 99%

Design a New Bidirectional Transmission Protocol to Improve the Performance of MAC Layer Based on Very High Speed WLANs

Milad¹,

Noh²,

Shibghatullah³

et al. 2015

Journal of Computer Science

View full text Add to dashboard Cite

This paper presents a new bidirectional transmission protocol with single data frame to computing the performance of MAC layer based on IEEE 802.11n. As high as 600 Mbps of physical data rate is achieved in IEEE 802.11n where high data rate the current MAC layer leads to high performance overhead and low performance of throughput and designing the MAC layer still ongoing to achieve high performance throughput. In this study, a new bidirectional transmission protocol with single data frame has been proposed called BTDF bidirectional transmission data fragmentation, which is divided each data frame from sender to receiver and reverse into subframes and send each subframe, Packets those exceed the size threshold are divided into fragments also where the corrupted subframe will be retransmitted during the disruption of transmission. We have implemented this scheme in NS2 simulator to show the results for TCP and HDTV traffics and compared with literature.

show abstract

Frame Aggregation in Wireless Networks: Techniques and Issues

Cited by 20 publications

References 4 publications

An adaptive LTE listen-before-talk scheme towards a fair coexistence with Wi-Fi in unlicensed spectrum

An adaptive LTE listen-before-talk scheme towards a fair coexistence with Wi-Fi in unlicensed spectrum

An intelligent arbiter for maximum CPU utilization, fair bandwidth allocation and low latency: Survey

Design a New Bidirectional Transmission Protocol to Improve the Performance of MAC Layer Based on Very High Speed WLANs

Contact Info

Product

Resources

About