Centralized Scheduling Mechanism for Enhanced End-to-End Delay and QoS Support in Integrated Architecture of EPON and WiMAX

Jung, Bokyung; Choi, JungYul; Han, Young-Tae; Kim, Min-Gon; Kang, Minho

doi:10.1109/jlt.2010.2048699

Cited by 37 publications

(8 citation statements)

References 14 publications

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“…Similar to the hybrid paradigm, the centralized scheduling, adopted by the combined approach, seems more effective on applying bandwidth allocation. According to [61], the combined approach offers good bandwidth utilization and QoS provisioning. As far as the unified architecture is concerned, an interesting feature is identified.…”

Section: G Discussion and Remarksmentioning

confidence: 99%

“…Another architecture paradigm, known as combined architecture, is proposed in [61]. In this case the ONU and the BS compose a single device, where a central control module, namely the joint controller, is located between them.…”

Section: Combined Architecturementioning

confidence: 99%

“…Considering that the OLT directly communicates with the SSs to meet their bandwidth requirements, the QoS mapping follows the QoS traffic classes as defined in the SSs. As the work in [61] incorporates, the five well-known classes of the WiMAX standard are utilized in the whole hybrid network. Hence, the QoS mapping in hybrid ONU simply adopts the priority queues of WiMAX.…”

Section: Qos Mapping Blockmentioning

confidence: 99%

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Architectures and Bandwidth Allocation Schemes for Hybrid Wireless-Optical Networks

Sarigiannidis

Iloridou

Nicopolitidis

et al. 2015

IEEE Commun. Surv. Tutorials

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The combination of the most prestigious optical and wireless technologies for implementing a modern broadband integrated access network has been progressively gaining ground. By extending the network coverage in a cost-efficient way, hybrid wireless-optical networks are able to enclose a larger number of potential subscribers than standalone access architectures. Hence, they are capable of increasing revenue levels and facilitating commercial penetration to the telecom market. At the same time, hybrid wireless-optical networks pose an ambitious, alternative, and efficient solution to coping with new bandwidth-hungry user applications. Hybrid wireless-optical networks incorporate sophisticated modules, fabrics, and network entities to effectively provide adequate quality of service (QoS) provisioning. This survey endeavors to classify the main features of wireless-optical integration. We provide a comprehensive compilation of the latest architectures, integrated technologies, QoS features, and dynamic bandwidth allocation (DBA) schemes. In addition, new trends towards wireless-optical convergence are presented. Moreover, as the up-to-date hybrid network standards remain under development, since there is not yet an integrated standard for approving hybrid network access platforms, we accompany this survey with detailed challenges indicating potential avenues of future research.

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Section: G Discussion and Remarksmentioning

confidence: 99%

Section: Combined Architecturementioning

confidence: 99%

Section: Qos Mapping Blockmentioning

confidence: 99%

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Architectures and Bandwidth Allocation Schemes for Hybrid Wireless-Optical Networks

Sarigiannidis

Iloridou

Nicopolitidis

et al. 2015

IEEE Commun. Surv. Tutorials

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“…Another study [1] proposed a centralized scheduling mechanism at the OLT, to reduce the end-to-end delay, based on the Hybrid ONU-BS architecture. While this included QoS mapping between eight priority queues and WiMAX traffic, they did not specify any class mapping or queue modeling.…”

Section: A Traffic Management At the Onumentioning

confidence: 99%

“…technologies such as T/E-carrier and digital subscriber line [1], and the emergence of optical networks and wireless broadband access networks. Optical networks are known for their high capacity and reliability, and are widely used in backbone communication networks [2].…”

mentioning

confidence: 99%

Service Class Resource Management for Green Wireless-Optical Broadband Access Networks (WOBAN)

Ahmed

Ahmad

Habibi

2015

J. Lightwave Technol.

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Exponential growth in the volume of wireless data, boosted by the growing popularity of mobile devices, such as smartphone and tablets, has forced the telecommunication industries to rethink the way networks are currently designed, and to focus on the development of high-capacity mobile broadband networks. In response to this challenge, researchers have been working toward the development of an integrated wireless optical broadband access network. Two major candidate technologies, which are currently known for their high capacity as well as quality of service (QoS) for multimedia traffic, are passive optical networks (PON), and fourth generation (4G) wireless networks. PON is a wired access technology, well known for its cost efficiency and high capacity; whereas 4G is a wireless broadband access technology, which has achieved broad market acceptance because of its ease of deployment, ability to offer mobility, and its cost efficiency. Integration of PON and 4G technologies in the form of wireless-optical broadband access networks, offers advantages, such as extension of networks in rural areas, support for mobile broadband services, and quick deployment of broadband networks. These two technologies however, have different design architectures for handling broadband services that require quality of service. For example, 4G networks use traffic classification for supporting different QoS demands, whereas the PON architecture has no such mechanism to differentiate between types of traffic. These two technologies also differ in their power saving mechanisms. In this paper, we propose a service class mapping for the integrated PON-4G network, which is based on the M/G/1 queuing model. We also propose a class-based power saving mechanism which significantly improves the sleep period for the integrated optical wireless unit, without compromising support for QoS. Results indicate that our proposed class-based power saving scheme reduces power consumption by up to 80%, and maintains the QoS within the requirements of the service level agreement.

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Addressing the interdependence in providing fair and efficient bandwidth distribution in hybrid optical‐wireless networks

Sarigiannidis

Nicopolitidis

2015

Int J Communication

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Summary The convergence of optical and wireless technologies may offer a compelling network access infrastructure because these technologies combine major benefits such as large coverage in the wireless part and huge bandwidth in the optical part of the converged access network. The convergence of the passive optical networks with 4G wireless standards, such as the Worldwide Interoperability for Microwave Access and the Long Term Evolution, constitutes a quite attractive solution to meet the challenges of the modern bandwidth‐hungry access networks. One of the most important objective a modern access network has to address is the adequate bandwidth distribution to the final users. In addition, several other aims are emerged towards this goal, such as fairness and quality of service provisioning. The adversity of designing an efficient bandwidth distribution scheme for hybrid optical‐wireless access networks lies in the interdependence of both domains: the bandwidth distribution in the wireless domain depends on the optical transmission grant opportunities, while the bandwidth coordinator in the optical part has to be aware of the mobile user heterogeneity in the wireless domain. Moreover, the bandwidth decision‐making module in both networks has to be aware of providing a fair allocation independently of the number of mobile users or the traffic requests in the network. In this work, we endeavor to address the aforementioned challenges. A novel, fair, and efficient bandwidth distribution scheme is proposed for hybrid optical‐wireless access networks. By using weighted fairness provisioning techniques, the proposed scheme intends to alleviate the interdependence of the two domains, offering a fair and efficient bandwidth distribution to the mobile users. The weights are properly defined, by utilizing suitable optimization techniques such as the Lagrange multiplies, so as to incorporate the underlying features of each traffic requests, such as the population density and the propagation delay. Extensive simulation results indicate the capability of the proposed scheme, compared with other competitive allocation schemes, in provisioning a more efficient and fair bandwidth distribution in terms of latency, throughput, and packet drop ratio. Copyright © 2015 John Wiley & Sons, Ltd.

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Centralized Scheduling Mechanism for Enhanced End-to-End Delay and QoS Support in Integrated Architecture of EPON and WiMAX

Cited by 37 publications

References 14 publications

Architectures and Bandwidth Allocation Schemes for Hybrid Wireless-Optical Networks

Architectures and Bandwidth Allocation Schemes for Hybrid Wireless-Optical Networks

Service Class Resource Management for Green Wireless-Optical Broadband Access Networks (WOBAN)

Addressing the interdependence in providing fair and efficient bandwidth distribution in hybrid optical‐wireless networks

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