A statistical power-saving mechanism for IEEE 802.16 networks

Hsu, Chung-Hsien; Feng, Kai-Ten

doi:10.1109/pimrc.2009.5450040

Cited by 4 publications

(7 citation statements)

References 6 publications

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“…15, where the lines of the higher Downlink/Uplink ratios have greater slopes. Table II, we summarize the total energy conserved in the whole network during a single downlink sub-frame, due to the intraframe sleep slots associated with served MSs, considering the power consumption values adopted for WiMAX systems in [5][6][7][8] according to the specifications of [4]. As expected, the more the participating MSs, the larger the available allocation space and the lower the Poisson λ parameter, that is the mean request size, the greater the overall power savings observed are.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Hence, it could be set to a low power mode for the residual downlink sub-frame (i.e., before and after its reception period). It is noted that an MS transceiver in sleep mode can conserve up to eleven twelfths of the energy consumed when being in the idle state [4][5][6][7][8]. When in sleep mode, data transmission or reception for an MS is not allowed.…”

Section: Energy Conservation In Vertical Spamentioning

confidence: 99%

“…It needs to be stressed out that hardware switching between reception and sleep mode may cause extra energy consumption, which could limit the power saving capabilities of the examined scheme. However, the typical power consumption values presented in the WiMAX chipset specifications [4] and adopted in [5][6][7][8] (power in receive mode: 280mW, power in idle mode: 120mW, power in sleep mode: 10mW, additional power when switching between receive and sleep modes: 1mW) reveal that the maximum of two switches which may occur during one frame period according to the analyzed mechanism do not add to the energy consumption very much, and therefore intra-frame power saving is advantageous.…”

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confidence: 99%

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On analyzing the intra-frame power saving potentials of the IEEE 802.16e downlink vertical mapping

2013

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Article:Lagkas, T.D. orcid.org/0000-0002-0749-9794, Sarigiannidis, P. and Louta, M. (2013) On analyzing the intra-frame power saving potentials of the IEEE 802.16e downlink vertical mapping. Computer Networks, 57 (7 AbstractWorldwide Interoperability for Microwave Access (WiMAX) is generally considered as a competitive candidate networking technology for the realization of the 4G vision. Among the key factors towards its successful and widespread deployment are the effective support of mobility and the provision of mechanisms for enabling service access at a high quality level in an efficient and cost-effective manner. Nonetheless, this effort should take into account and adequately address strict and severe energy limitations that the mobile devices are currently facing. Power saving constitutes an issue of vital importance, as mobile terminals continue to incorporate more and more functionalities and energy-hungry features in order to support the ever increasing user requirements and demands. The standard employs variations of power saving classes in a frame-to-frame basis, while recent power saving mechanisms proposed in related research literature limit their activity in whole frames, neglecting, thus, the intra-frame power saving capabilities. In this work, the intra-frame energy conservation potentials of the mobile WiMAX network are studied and a novel analytical approach is provided, focusing on the downlink direction where the bandwidth allocation involves idle intervals and dynamic inactivity periods. Specifically, we endeavour to accurately analyse the potential energy conservation capabilities in an intra-frame point of view, applying the well-known simple packing algorithm to distribute the available bandwidth to the various subscribers. Our analytical -2 -findings are thoroughly cross-validated via simulation, providing clear insights into the intraframe energy reduction capabilities.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Energy Conservation In Vertical Spamentioning

confidence: 99%

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confidence: 99%

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On analyzing the intra-frame power saving potentials of the IEEE 802.16e downlink vertical mapping

2013

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“…When in sleep mode within a single frame (the respective slots are referred to as sleep slots), the MS is unavailable, not able to send or receive data, but notably low energy consumption is achieved. In sleep mode, it is shown that an MS consumes as low as one twelfth of the energy consumed when being in idle mode [8][9][10][11][12]. The fact that an MS in sleep mode cannot transmit or receive data does not degrade network performance at all, since the examined mapping scheme involves no data transfers that concern the specific MS during the sleep slots.…”

Section: Horizontal Spa and Power Savingmentioning

confidence: 99%

“…Aiming to cover this absence of known relevant research attempts in the literature, the contribution of our paper lies in intra-frame power saving investigation, studying the potential power savings of intraframe sleep periods. Recent studies [8][9][10][11] show that modern WiMAX transceivers [12] exhibit sufficiently low power demands that justify the intra-frame energy conservation perspectives 3 analyzed in this paper. Hence, bearing in mind that the in-frame requests' mapping process is quite important in WiMAX systems, since it affects the whole network performance (e.g., the unmapped requests are returned to the scheduler and they should be reallocated, leading to performance degradation) and green broadband access networks form a very hot and concurrently critical research field, this paper constitutes an effort to contribute novel power saving related aspects to the IEEE 802.16 wireless networks.…”

Section: Introductionmentioning

confidence: 99%

Exploring the intra-frame energy conservation capabilities of the horizontal simple packing algorithm in IEEE 802.16e networks: an analytical approach

2012

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The power saving capabilities of the mobile devices in broadband wireless networks constitute a challenging research topic that has attracted the attention of researchers recently, while it needs to be addressed at multiple layers. This work provides a novel analysis of the intra-frame energy conservation potentials of the IEEE 802.16e network. Specifically, the power saving capabilities of the WiMAX downlink sub-frame are thoroughly studied, employing the well-known simple packing algorithm as the mapping technique of the data requests. The accurate mathematical model, cross-validated via simulation, reveals the significant ability to conserve energy in this intra-frame fashion under different scenarios. To the best of our knowledge, this is the first work providing intra-frame power-saving potentials of IEEE 802.16 networks. Additionally, this is the first study following an analytic approach.

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