Joint bandwidth allocation on dedicated and shared wavelengths for QoS support in multi‐wavelength optical access network

Ni, Cuiping; Gan, Chaoqin; Chen, Haibin

doi:10.1049/iet-com.2013.0183

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…We consider that packets of all QoS classes arrive at the corresponding uplink queue according to a Poisson process. Even though the characteristics of independent and identically distributed random arrivals of the Poisson process do not perfectly reflect the packet-level traffic features of wireless networks and PONs, the Poisson process is broadly considered as the starting point of a packet-level teletraffic analysis [21][22][23][24][25]. The arrival rate of the QoS-class c packets in SS S n, bn that is connected to the BS b n of the ONU n is denoted by l n,b,s,c .…”

Section: Wireless Domainmentioning

confidence: 99%

Delay analysis of converged optical‐wireless networks with quality of service support

Vardakas

Moscholios

Logothetis

et al. 2014

IET Circuits, Devices & Systems

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The convergence of two popular access technologies, namely Worldwide interoperability for Microwave Access (WiMAX) and passive optical network (PON) is a promising access solution that combines the mobility feature of WiMAX and the ample bandwidth of PONs. In such a converged optical-wireless access network, the provision of quality of service (QoS) support is a challenging issue, mainly because of the different bandwidth allocation mechanisms of the two access technologies. Since the considered convergence seems to be dominant, it deserves assiduous analysis and evaluation. In this study, the authors investigate the delay performance of a converged optical-wireless network that provides QoS support by considering multiple service-classes with different priorities. In the wireless domain, the IEEE 802.16 standard is applied, whereas in the optical domain a wavelength division multiplexing ethernet PON provides connectivity to both wired and wireless users. The authors present an analytical framework for the calculation of the average end-to-end packet delay of each service-class, by developing two queuing models for each domain of the converged network. The end-to-end delay is calculated as the sum of the queuing delay in both domains, and the transmission and propagation delay in the optical domain. The accuracy of the proposed analysis has been verified by simulation and found to be quite satisfactory.

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Section: Wireless Domainmentioning

confidence: 99%

Delay analysis of converged optical‐wireless networks with quality of service support

Vardakas

Moscholios

Logothetis

et al. 2014

IET Circuits, Devices & Systems

View full text Add to dashboard Cite

show abstract

“…A lot of dynamic wavelength bandwidth allocation (DWBA) algorithms have been proposed to handle this issue [1,2,3,4], but all these studies were considered under the precondition that wavelength allocation is operated with a fixed number of tunable wavelengths. In [5], a joint bandwidth allocation scheme on dedicated and shared wavelength was proposed, which first takes the influence of different number of assigned wavelengths on the network performance into account, but without considering the negative effects introduced by the increment of wavelength number. A wavelength optimization scheme to achieve the balance between performance and cost was proposed in [6], but the relevant performance metric was restricted to queue delay.…”

Section: Introductionmentioning

confidence: 99%