Spectral and energy efficiency tradeoff in optical code division multiple access networks

Martinez, Cristiane A. Pendeza; Abrão, Taufik

doi:10.1002/ett.4107

Cited by 4 publications

(1 citation statement)

References 33 publications

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“…In this regard, the optical interconnection technology appears as challenging enough in the DCNs environment at the edge tier level. In literature, many studies like Reference 9 have proposed energy and spectral efficient optical networking schemes aiming the so‐called green communication. In specific, the optical circuit switching (OCS) technology has been proposed for DCNs 10 .…”

Section: Introductionmentioning

confidence: 99%

i‐WABA: An efficient wavelengths arrangement and bandwidth allocationWDMAprotocol for passive optical intra‐rack data center networks

Baziana

2022

Trans Emerging Tel Tech

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In this article, we effectively handle the continuously growing traffic within data centers (DCs) and we focus on the intra-rack communication. We propose a passive optical intra-rack DC network (DCN) that uses a set of wavelengths for the data intra-rack communication and a separate control wavelength for pre-transmission coordination. We introduce a distributed access control scheme, named intra-rack wavelengths arrangement and bandwidth allocation (i-WABA) protocol, to effectively arrange the data wavelengths into groups and efficiently allocate them among the servers for transmission, avoiding synchronization complexity. The proposed i-WABA protocol ensures the collisions-free transmission over the data wavelengths and at destination achieving high performance, scalability, and reliability. In opposition to the majority of the state-of-the-art intra-rack MAC protocols that adopt synchronous transmission requiring strict time compliance, the proposed i-WABA protocol is unslotted providing simple and reliable access control even under high data rates. Moreover, unlike other studies that assume that the control communication is performed over an Ethernet link, the proposed intra-rack DCN considers that it is performed in the optical domain, ensuring its effective parallel operation to the data communication. The throughput improvement is extensively studied and it is proven to be an increasing function of the number of data wavelengths groups.Finally, the proposed intra-rack DCN along with the proposed i-WABA protocol is compared with other state-of-the-art intra-rack DCNs in terms of throughput, power consumption, and cost, while it is proven to be a performance, energy, and cost efficient DCN solution.

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Section: Introductionmentioning

confidence: 99%

i‐WABA: An efficient wavelengths arrangement and bandwidth allocationWDMAprotocol for passive optical intra‐rack data center networks

Baziana

2022

Trans Emerging Tel Tech

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An efficient multicriteria‐based vertical handover decision‐making algorithm for heterogeneous networks

Satapathy

Mahapatro

2021

Trans Emerging Tel Tech

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Heterogeneous networks are designed to offload or route some of data traffics of mobile networks through other co‐located wireless access networks. This technique apparently increases the capacity of mobile network. In such networks, a vertical handover process plays an important role in providing seamless and uninterrupted connectivity as well as the required level of quality‐of‐service along with a wide coverage for all mobile nodes. Traditional vertical handover algorithms that are based on single criterion (eg, received signal strength) are not performing well in terms of excess handover rates, ping‐pong effects, handover delays, handover cost, etc. This research presents an efficient multicriteria‐based vertical handover decision‐making algorithm for heterogeneous networks. This algorithm uses a two‐step execution procedure, the first step evaluates whether the handover is needed or not before initiating a handover process, if needed, then a set of feasible solutions are generated for the vertical handover problem formulated as a multi‐objective optimization problem with two objective functions such as quality factor of networks and handover processing cost. In the second step, an optimal solution (ie, an appropriate access network) for handover is obtained using a hybrid approach of fuzzy analytic hierarchy process (FAHP) and technique for order preference by similarity to ideal solution (TOPSIS). Our simulation study shows that the proposed algorithm performs well as compared to some other existing algorithms (ie, single‐criterion based, multicriteria with AHP, multicriteria with TOPSIS, and multicriteria with both AHP and TOPSIS) in terms of performance metrics such as handover rate, delay, cost, and energy consumption.

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Random Point Evolution-Based Heuristic for Resource Efficiency in OCDMA Networks

Martinez

Abrão

2023

J Netw Syst Manage

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Spectral and energy efficiency tradeoff in optical code division multiple access networks

Cited by 4 publications

References 33 publications

i‐WABA: An efficient wavelengths arrangement and bandwidth allocationWDMAprotocol for passive optical intra‐rack data center networks

i‐WABA: An efficient wavelengths arrangement and bandwidth allocationWDMAprotocol for passive optical intra‐rack data center networks

An efficient multicriteria‐based vertical handover decision‐making algorithm for heterogeneous networks

Random Point Evolution-Based Heuristic for Resource Efficiency in OCDMA Networks

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