When priority resolution goes way too far: An experimental evaluation in PLC networks

Cano, Cristina; Malone, David

doi:10.1109/icc.2015.7248445

Cited by 7 publications

(9 citation statements)

References 10 publications

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“…The MAC protocols defined in the HomePlug [47], IEEE 1901 [41] and G.hn (G.9961) [52] standards define a contention-based (random access) as well as a contention-free (TDMA-like) procedure to access the channel. However, it is the random access procedure that usually is observed for Internet traffic [129], and thus we will focus on this in the following. Although the three standards differ on how the channel access is realized, the random access procedure is equivalent.…”

Section: A Mac Protocols For Bb Applicationsmentioning

confidence: 99%

“…Channel differentiation in PLC networks has been evaluated in [139], [140], [141], [142] and [129]. Although the priority resolution mechanism is able to provide strict protection to high-priority traffic, a series of issues has been identified.…”

Section: ) Strict Prioritization -Benefits and Drawbacksmentioning

confidence: 99%

“…Although the priority resolution mechanism is able to provide strict protection to high-priority traffic, a series of issues has been identified. First, one immediate effect of this strong protection to highpriority frames is the starvation faced by lower-priority traffic [129]. To illustrate the importance of this effect we show in Fig.…”

Section: ) Strict Prioritization -Benefits and Drawbacksmentioning

confidence: 99%

“…Moreover, as shown in [142], the behavior of the network is extremely hard to predict when we vary the number of stations contending for the channel or when the traffic load changes. Additionally, given that control messages for tone map update are sent at CA2, a possible oscillatory behavior in throughput has been identified [129]. This is because it is impossible to release these control messages in presence of a saturated CA3 source, which prevents a given station transmitting as its tone map is [129].…”

Section: ) Strict Prioritization -Benefits and Drawbacksmentioning

confidence: 99%

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State of the Art in Power Line Communications: From the Applications to the Medium

Cano

Pittolo

Malone

et al. 2016

IEEE J. Select. Areas Commun.

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197

114

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In recent decades, power line communication has attracted considerable attention from the research community and industry, as well as from regulatory and standardization bodies. In this article we provide an overview of both narrowband and broadband systems, covering potential applications, regulatory and standardization efforts and recent research advancements in channel characterization, physical layer performance, medium access and higher layer specifications and evaluations. We also identify areas of current and further study that will enable the continued success of power line communication technology.essentially concerned with coexistence with other systems that also use the power grid (i.e. machines and appliances that draw electricity) and wireless systems operating in the same frequency bands as PLC. The frequency range used for today's PLC solutions starts as low as 125 Hz and reaches as high as 100 MHz. A useful classification of PLC systems according to frequency bands has been introduced in [28]: it distinguishes between ultra-narrowband (UNB), narrowband (NB) and broadband (BB) PLC systems, operating between about 125-3000 Hz, 3-500 kHz and 1.8-100 MHz, respectively. Most recent developments in standardization and regulation activities over the past 20 or so years apply to NB and BB PLC systems, and we will focus on these in the following.

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Section: A Mac Protocols For Bb Applicationsmentioning

confidence: 99%

Section: ) Strict Prioritization -Benefits and Drawbacksmentioning

confidence: 99%

Section: ) Strict Prioritization -Benefits and Drawbacksmentioning

confidence: 99%

Section: ) Strict Prioritization -Benefits and Drawbacksmentioning

confidence: 99%

See 2 more Smart Citations

State of the Art in Power Line Communications: From the Applications to the Medium

Cano

Pittolo

Malone

et al. 2016

IEEE J. Select. Areas Commun.

Self Cite

197

114

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show abstract

“…Previously, Cano and Malone have carried out simulations [7] and experimental tests [8] on HomePlug Audio Video (AV) Protocol, focusing on the network throughput under saturated traffic, rather than network latency. However, saturated traffic is not desired in in-vehicle networks because it induces much larger latency.…”

Section: Introductionmentioning

confidence: 99%

Queuing enhancements for in-vehicle time-sensitive streams using power line communications

Huo

Zheng

Sheng

et al. 2015

2015 IEEE/CIC International Conference on Communications in China (ICCC)

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Power line communication (PLC) technology enables existing direct current power lines in an automobile to be used for data transmissions. Due to its potential for cost reduction and energy saving, PLC is an attractive supplement to the Ethernet in next generation in-vehicle networks. This paper considers using HomePlug Green PHY (HomePlug GP) as an invehicle PLC network protocol due to its low cost, compact size, universal applicability, strong reliability and reduced overhead. To address the challenge of long latency in data transfer by HomePlug GP, we propose two queuing enhancements to improve the real-time performance of HomePlug GP. Specifically, we introduce the virtual collision mechanism to improve the fairness of queuing. We further apply the principle of credit-based shaping in IEEE 802.1 Audio Video Bridging over the HomePlug GP to meet the latency requirements of different network traffic. OMNeT++ simulation results demonstrate the effectiveness of the two proposed enhancements.

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On efficiency and validity of previous Homeplug MAC performance analysis

Cano

Malone

2015

Computer Networks

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The Medium Access Control protocol of Power Line Communication networks (defined in Homeplug and IEEE 1901 standards) has received relatively modest attention from the research community. As a consequence, there is only one analytic model that complies with the standardised MAC procedures and considers unsaturated conditions. We identify two important limitations of the existing analytic model: high computational expense and predicted results just prior to the predicted saturation point do not correspond to long-term network performance. In this work, we present a simplification of the previously defined analytic model of Homeplug MAC able to substantially reduce its complexity and demonstrate that the previous performance results just before predicted saturation correspond to a transitory phase. We determine that the causes of previous misprediction are common analytical assumptions and the potential occurrence of a transitory phase, that we show to be of extremely long duration under certain circumstances. We also provide techniques, both analytical and experimental, to correctly predict long-term behaviour and analyse the effect of specific Homeplug/IEEE 1901 features on the magnitude of misprediction errors.

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When priority resolution goes way too far: An experimental evaluation in PLC networks

Cited by 7 publications

References 10 publications

State of the Art in Power Line Communications: From the Applications to the Medium

State of the Art in Power Line Communications: From the Applications to the Medium

Queuing enhancements for in-vehicle time-sensitive streams using power line communications

On efficiency and validity of previous Homeplug MAC performance analysis

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