Bandwidth partitioning for Mobile WiMAX service provisioning

Kallel, Sondes; Boussetta, Khaled; Achir, Nadjib

doi:10.1109/wd.2008.4812926

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Khemiri et al . consider an optimisation problem for partitioning cell capacity into trunks, each of which is strictly reserved for the different WiMAX classes, so that prescribed dropping and blocking probabilities can be met. The QoS‐oriented AC scheme proposed by Theodoridis and Pavlidou is mainly concerned with the signal‐to‐noise ratio (SNR) sampling and estimation procedure.…”

Section: Relevant Literaturementioning

confidence: 99%

“…Each of them has different QoS requirements and hence it seems reasonable to expect that operators will use different classes of AC strategies—complete sharing, complete partitioning and combinations of these—for the different service classes. Because the unsolicited grant service (UGS) WiMAX class, which corresponds to the studied in this work fixed‐rate service with hard delay constraints, has the most stringent QoS requirements among the WiMAX service classes, system resources can be divided into two separate pools: one explicitly for the UGS class and the other one for the other WiMAX classes. The latter pool can be managed by a class of complete sharing with priority algorithms pertinent to the traffic characteristics of the services.…”

Section: System Modellingmentioning

confidence: 99%

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Effect of AMC on fixed-rate traffic with hard delay constraints in mobile broadband systems

Vassileva

Koucheryavy

2013

Wirel. Commun. Mob. Comput.

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The adaptive modulation and coding (AMC) technique, which has been adopted by advanced mobile telecommunication systems, supports a flexible response to the random radio behaviour. As a result, the attained transmission rate over a wireless link is time varying. Hence, resource demands are not deterministic but fluctuating even for calls with constant bit rate service requirements. Consequently, constant bit rate calls are susceptible to a forced call termination because of insufficient resources not only in a target cell during inter-cell handoffs but also in a serving cell during radio link deterioration. Furthermore, call blocking and dropping probabilities depend on radio propagation conditions among other factors and therefore they are dissimilar throughout a service area. The latter leads to unfairness problems. We analytically measure the impact of AMC on fixed-rate service with hard delay constraints such as voice for different signal, mobility and traffic conditions. We consider a reference case (call requests are admitted into the system provided there are enough free resources) and two classes of admission control approaches: traditional (only inter-cell handoffs are prioritised) and modified (all ongoing calls are prioritised). The reported results reveal conditions for which AMC affects voice call performance and can serve as guidelines on admission control design.

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Section: Relevant Literaturementioning

confidence: 99%

Section: System Modellingmentioning

confidence: 99%

Effect of AMC on fixed-rate traffic with hard delay constraints in mobile broadband systems

Vassileva

Koucheryavy

2013

Wirel. Commun. Mob. Comput.

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“…One solution is to use a CAC block presented in (Khemiri S. et al, 2008) based on Complete Partitioning (CP) between service classes and we assume that all connections accepted in the system are the result of applying this CAC strategy. We also suppose that at the MAC layer all MPDUs of the traffic transported by the MSSs are fragmented so that a single frame can carry the largest MPDU in the traffic.…”

Section: Step 1: Call Admission Controllmentioning

confidence: 99%