Modified Proportional Fair Scheduling Algorithm for Heterogeneous LTE-A Networks

Elshennawy, Nada M.

doi:10.3991/ijim.v14i10.14389

Cited by 8 publications

(4 citation statements)

References 14 publications

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“…The introduced scheduler relies on static user pre-defined parameters for channel and QoS weights which returns a short-range QoS performance guarantee though. Authors in [14] modified the conventional behavior of PF by integrating the buffer size of the flow while in [31] root mean square (RMS) method is considered to build the cost function of PF. The modified PF-based utility resulted in a mild performance between system throughput and fairness.…”

Section: Related Workmentioning

confidence: 99%

Delay-Oriented Resource Allocation for OFDMA Real-Time Mobile Broadband Services

Madi¹,

Najim²

2023

Int. J. Interact. Mob. Technol.

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Radio Resource Management (RRM) is the key component that influences the Quality of Service (QoS) in emerging mobile systems. The harsh requirements of recent multimedia applications press on the behavior of the resource allocation model at the Medium Access Control (MAC). This, under certain conditions, deteriorates awareness of the scheduler in satisfying QoS characteristics for the diverse attending traffic flows. The trade-off between QoS metrics may be a viable remedy to this problem. However, if the tradeoff is not meticulously addressed, it definitely increases the delay beyond the allowed threshold and plummets the data rates of the involved flows. In this article, a Delay-oriented Resource Allocation (DoRA) scheduler is proposed for the downlink channel to transmit multimedia applications. The main aim of DoRA is to schedule flows of different volumes with guaranteed low delay values and acceptable throughput under harsh network conditions (i.e., high traffic load and mobility). An efficient priority weight function is formulated based on a delay-oriented rule considering the buffer delay of the diverse flows. Eventually, a greedy algorithm assigns channel resources to the prioritized flows with high weights. DoRA is compared to reference schedulers using system-level simulation over two scenarios. The performance results indicate that DoRA maintains a low end-to-end delay with robust throughput and efficient spectrum efficiency for different flow volumes over congested network states.

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Section: Related Workmentioning

confidence: 99%

Delay-Oriented Resource Allocation for OFDMA Real-Time Mobile Broadband Services

Madi¹,

Najim²

2023

Int. J. Interact. Mob. Technol.

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“…Ref. [32] studied the modified proportional fair scheduling algorithm for heterogeneous LTE-A networks. The findings showed that the proposed Quadratic Proportional Fair (QPF) algorithm outperforms the original PF in spectral efficiency, energy per bit, and fairness by 8.4%, 14%, and 9.3%, respectively.…”

Section: Related Workmentioning

confidence: 99%

Novel Channel/QoS Aware Downlink Scheduler for Next-Generation Cellular Networks

Taha¹,

Hacı²,

Serener³

2022

Electronics

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Downlink schedulers play a vital part in the current and next-generation wireless networks. The next generation downlink scheduler should satisfy the demand for different requirements, such as dealing with ultra-dense networks and the need to run real-time (RT) and non-real-time (nRT) applications, with a high quality of service (QoS). Many researchers have developed various schedulers for these, but none have introduced one scheduler to target them all. This paper introduces a novel channel/QoS aware downlink scheduler algorithm, called Advanced Fair Throughput Optimized Scheduler (AFTOS), for ultra-dense networks. AFTOS is a multi-QoS scheduler that aims to maximize system spectrum efficiency and user throughput with enhanced fairness, delay, and packet loss ratio (PLR). It is capable of handling RT and nRT traffic. We developed two new policies, called Adjusted Largest Weighted Delay First (ALWDF) and Fair Throughput Optimized Scheduler (FTOS), for RT and nRT traffic. Then, we joint them to introduce our novel downlink scheduler Advanced Fair Throughput Optimized Scheduler (AFTOS). For evaluating the suggested algorithm, we undertook experiments to decide the ideal parameter value for the proposed approaches and compared the proposed solution to current best practices. The findings prove that the AFTOS algorithm can achieve its objectives, outperforming the alternative techniques.

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“…The drawback of this algorithm is that when the user's channel is poor, the user may not be able to perform scheduling. Proportional Fair (PF) algorithm is also one of the famous scheduler used in LTE networks [25]. it is widely used for Code Division Multiple Access (CDMA) systems and then used for the Orthogonal Frequency Division Multiplexing (OFDM) systems [26].…”

Section: Literature Reviewmentioning

confidence: 99%

Vehicular Networks Performance Evaluation Based on Downlink Scheduling Algorithms for High-Speed Long Term Evolution – Vehicle

Mahdi

Al-Bander

Alwan

et al. 2021

Int. J. Interact. Mob. Technol.

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Moving is the key to modern life. Most things are in moving such as vehicles and user mobiles, so the need for high-speed wireless networks to serve the high demand of the wireless application becomes essential for any wireless network design. The use of web browsing, online gaming, and on-time data exchange like video calls as an example means that users need a high data rate and fewer error communication links. To satisfy this, increasing the bandwidth available for each network will enhance the throughput of the communication, but the bandwidth available is a limited resource which means that thinking about techniques to be used to increase the throughput of the network is very important. One of the techniques used is the spectrum sharing between the available networks, but the problem here is when there is no available channel to connect with. This encourages researchers to think about using scheduling as a technique to serve the high capacity on the network. Studying scheduling techniques depends on the Quality-of-Service (QoS) of the network, so the throughput performance is the metric of this paper. In this paper, an improved Best-CQI scheduling algorithm is proposed to enhance the throughput of the network. The proposed algorithm was compared with three user scheduling algorithms to evaluate the throughput performance which are Round Robin (RR), Proportional Fair (PF), and Best-CQI algorithms. The study is performed under Line-of-Sight (LoS) link at carrier frequency 2.6 GHz to satisfy the Vehicular Long Term Evolution (LTE-V) with the high-speed scenario. The simulation results show that the proposed algorithm outperforms the throughput performance of the other algorithms.

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Modified Proportional Fair Scheduling Algorithm for Heterogeneous LTE-A Networks

Cited by 8 publications

References 14 publications

Delay-Oriented Resource Allocation for OFDMA Real-Time Mobile Broadband Services

Delay-Oriented Resource Allocation for OFDMA Real-Time Mobile Broadband Services

Novel Channel/QoS Aware Downlink Scheduler for Next-Generation Cellular Networks

Vehicular Networks Performance Evaluation Based on Downlink Scheduling Algorithms for High-Speed Long Term Evolution – Vehicle

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