Throughput, delay and bandwidth efficiency of IEEE 802.15.4a using CSS PHY

Borges

2020

IET wirel. sens. syst.

“…Analytical results consider (24). Without retransmissions, the obtained results are very similar to the ones obtained in [28, 29], which again verify the proposed formulation.…”

Section: Performance Evaluationsupporting

confidence: 83%

D_{\min}

, is because authors in [29] have not considered the time needed to switch the radio between the different states ( rxSetupTime ), as it has been done in [24].…”

Section: Performance Evaluationmentioning

confidence: 98%

Performance enhancement of IEEE 802.15.4 by employing RTS/CTS and frame concatenation

Borges

2020

IET wirel. sens. syst.

“…By comparing IEEE 802.15.4 in the basic access mode (labeled DATA/ACK in the legend) for the case without retransmissions with the one presented in [15], we conclude that the differences in terms of minimum average delay, D min , are justified by the fact that the authors in [15] have not considered the time needed to switch the radio between the different states (i.e., rxSetupTime) [10].…”

Section: Rxmentioning

confidence: 96%

“…15.4 has been widely accepted as the de facto standard for WSNs, enabling to provide ultralow complexity, cost and power for low-data rate wireless connectivity for wireless sensors.…”

Section: Introductionmentioning

confidence: 99%

Block acknowledgment in IEEE 802.15.4 by employing DSSS and CSS PHY layers

Borges

2014 IEEE Globecom Workshops (GC Wkshps)

2014

The IEEE 802.15.4 standard has been widely accepted as the de facto standard for Wireless Sensor Networks (WSNs), since it provides ultra-low complexity, cost and energy consumption for low-data rate wireless connectivity. However, one of the fundamental reasons for the IEEE 802.15.4 Medium Access Control (MAC) inefficiency is overhead. In the context of our research, we demonstrate that WSNs may benefit from packet concatenation. In this paper we introduce and study the employment of a block acknowledgment mechanisms in order to achieve enhanced channel efficiency in IEEE 802. nonbeaconenabled networks for both the Chirp Spread Spectrum (CSS) and Direct Sequence Spread Spectrum (DSSS) Physical (PHY) layers for the 2.4 Industrial, Scientific and Medical (ISM) frequency band. The proposal of the two new innovative MAC sub-layer mechanisms can also be considered as a future possible contribution to the standard itself. The throughput and delay performance is mathematically derived under ideal conditions, (i.e., a channel environment without transmission errors). The performance of the proposed schemes is compared against the IEEE 802.15.4 standard through extensive simulations by employing the OMNeT++ simulator. We demonstrate that, for both PHY layers, the network performance is significantly improved in terms of throughput, end-to-end delay and bandwidth efficiency. Globecom 2014 Workshop -Telecommunications Standards -From Research to Standards 978-1-4799-7470-2/14/$31.00 ©2014 IEEE

show abstract

“…In [3] the authors have shown that one fundamental reason for IEEE 802.15.4/4a MAC inefficiency is overhead, where the use of ACK control packets can decrease the bandwidth efficiency about 10%.…”

Section: Introductionmentioning

confidence: 99%

Block acknowledgment mechanisms for the optimization of channel use in wireless sensor networks

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

2013