Design and Implementation of a QoS-included WiMAX Module for NS-2 Simulator

Belghith, Aymen; Nuaymi, Loutfi

doi:10.4108/icst.simutools2008.2958

Cited by 36 publications

(15 citation statements)

References 7 publications

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“…For performing simulations we have adopted ns-2 simulator [5] with the additional module Belghith-Nuaymi [10], for implementing IEEE 802.16 functionalities. The study is focused on MAC layer uplink request/grant scheduling.…”

Section: Simulations and Resultsmentioning

confidence: 99%

An innovative uplink scheduler for enhancing multi-rate fairness in WiMAX

Andreadis

Rizzuto

Zambon

2011

2011 50th FITCE Congress - "ICT: Bridging an Ever Shifting Digital Divide"

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WiMAX is one of the most interesting solutions for broadband wireless access, offering QoS features for multimedia traffics and applications. However, without the definition of a mandatory scheduling algorithm for the assignment of channel resources, WiMAX standard is open to enhancements by QoS research groups and developers. In this paper, BS uplink scheduling algorithms are considered and an innovative solution is proposed in order to improve multi-rate fairness and QoS management. The proposed scheduler, named E-DRR, has been compared with the existing solutions through exhaustive simulations, showing its enhancements in terms of QoS performance and multi-rate fairness in resource allocation.

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Section: Simulations and Resultsmentioning

confidence: 99%

An innovative uplink scheduler for enhancing multi-rate fairness in WiMAX

Andreadis

Rizzuto

Zambon

2011

2011 50th FITCE Congress - "ICT: Bridging an Ever Shifting Digital Divide"

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“…To analyze network performance more realistically, we simulated our system by generating appropriate traffic in terms of size and characteristics. We used the traffic characteristics described in [18,19], where class 1 traffic (voice) is modeled as a constant bit rate with a packet size of 100 bytes, class 2 traffic (video) is modeled as a variable bit rate by using a uniformly distributed packet size between 500 and 1500 bytes, and class 3 traffic (e-mail) is modeled as an exponential distribution of the packet arrival with a packet size of 60 bytes. In this simulation, all the ONU/BSs had the same number and configuration of wireless connections, so as to generate an identical load at all ONU/BSs.…”

Section: Traffic Characteristics and Modelingmentioning

confidence: 99%

Green Wireless-Optical Broadband Access Network: Energy and Quality-of-Service Considerations

Ahmed

Ahmad

Habibi

2015

J. Opt. Commun. Netw.

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Growing energy demands in the information and communication technology (ICT) sector have been recognized as a major challenge worldwide. Researchers have been actively working to address this challenge, and the major focus centers around improving the energy efficiency of access networks, which are known for consuming about three-quarters of the total network power. Among various access networks, the hybrid wireless-optical broadband access network (WOBAN), which combines a passive optical network (PON) with broadband wireless technology, is highly regarded for its enormous capacity, cost efficiency, and ease of deployment. To develop a green WOBAN, it is important to focus on reducing its power consumption, and in this work, we present an efficient resource management technique for WOBAN that reduces the power consumption of the optical line terminal (OLT) and optical network unit (ONU) by introducing sleep modes for the OLT and ONU, based on the service class and traffic load. Moreover, it considers the quality-of-service requirement of each service class. Simulation results confirm that our proposed solution can save a significant amount of power in the WOBAN network without sacrificing the quality of service of end applications.

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“…We also implement the unicast and contention request opportunities mechanisms as specified in the IEEE 802.16 standard in order to allow the SS to send their bandwidth requests. Our NS-2 WiMAX model is described in [14] and available at: http://cristal-lab.net/belghith/.…”

Section: B Simulation Modelmentioning

confidence: 99%

Pricing-Based Schedulers for WiMAX

Belghith

2009

2009 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications

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Scheduling algorithms are very important in WiMAX for the efficient use of radio resources. However, the standard does not specify which scheduling algorithm(s) should be used. A scheduling algorithm should take into account the WiMAX QoS classes and service requirements. The scheduling algorithm also has to taken into account other models of the WiMAX system such as power saving and pricing models.In this paper, we propose schedulers for some QoS classes. These schedulers are designed to include our WiMAX pricing model that we proposed in previous works in our WiMAX framework. We show that the scheduler has to take into account the pricing model used. Moreover, we show that the optimization of resources usage associated with a suitable pricing scheme provides higher revenue for the operator by comparing our sophisticated pricing scheme with a basic one.

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Design and Implementation of a QoS-included WiMAX Module for NS-2 Simulator

Cited by 36 publications

References 7 publications

An innovative uplink scheduler for enhancing multi-rate fairness in WiMAX

An innovative uplink scheduler for enhancing multi-rate fairness in WiMAX

Green Wireless-Optical Broadband Access Network: Energy and Quality-of-Service Considerations

Pricing-Based Schedulers for WiMAX

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