Two-Level Downlink Scheduling for Real-Time Multimedia Services in LTE Networks

Piro, Giuseppe; Grieco, L. A.; Boggia, Gennaro; Fortuna, R.; Camarda, P.

doi:10.1109/tmm.2011.2152381

Cited by 209 publications

(138 citation statements)

References 24 publications

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“…Dimitrova et al (2011) have presented a performance comparison of two distinct scheduling schemes for LTE uplink (fair fixed assignment and fair work-conserving) taking into account both packet level characteristics and flow level dynamics due to the random user behavior. Piro et al (2010) have proposed a novel two-level scheduling algorithm. At the upper level, discrete time linear control theory is the basis for this novel approach.…”

Section: Problem Identification and Proposed Solutionmentioning

confidence: 99%

Utility Based Scheduling and Call Admission Control for Long Term Evolution Networks

Franklin¹

2012

Journal of Computer Science

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In this study, we propose to design a call admission control algorithm which schedules the channels for Real time and non-real time users. In Long Term Evolution (LTE) 3GPP Networks, several works were done on call admission control but these works rarely considers scheduling of resources to the real time and non-real time users.When the system meets traffic oriented performance degration, maximum resources are utilized for load balancing and to maintain the consistent quality. In order to avoid the channel degradation and improve the Quality of Service (QoS), the call requests are classified into New Call (NC) request and Handoff Call (HC) request and the type of services are classified as VoIP and video. Then based upon the Received Signal Strength (RSS) value, the channel is estimated as good channel or bad channel. Resource allocation is made for VoIP users based on traffic density. Then non-VoIP users and the non-real time users are allocated resource blocks using the channel condition based marginal utility function. When there are no sufficient resources to allocate, it allocates the resources of bad channel users there by degrading their service. We have designed the network topology with G (n) and B (n) for representing the available good and bad channels. We investigate the performance degradation when the real time, Non real Time, video and VOIP environments based on RSS threshold value.Comparison is made with the VOS in terms of the paramenters like throughput,bandwidth,delay,fairness and rate. Our proposed method provides good performance and quality.From our simulation results we show that this admission control algorithm provides channel quality and prioritizes the handover calls over new calls which allocates resources to all kinds of users.

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Section: Problem Identification and Proposed Solutionmentioning

confidence: 99%

Utility Based Scheduling and Call Admission Control for Long Term Evolution Networks

Franklin¹

2012

Journal of Computer Science

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“…The reader may refer to the works in [2][3][4][5]. However, to the best of the authors' knowledge, none of these strategies has dealt with linear services which require a maximization of the number of users served.…”

Section: Introductionmentioning

confidence: 99%

Near optimal linear-service oriented resource allocation strategy for LTE networks

Shokair

Nasser

Bazzi

et al. 2017

2017 9th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)

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Abstract-Extensive research efforts are being attracted towards resource allocation in LTE networks. However, from the resource allocation perspectives, linear services such as Digital TV programs have been scarcely studied. In fact, for end-users requesting linear services, the maximization of the the number of users served is much important goal than maximizing the overall capacity of the network. In this paper, linear services oriented resource allocation strategy is proposed. The goal of the proposed algorithm is to maximize the success rate of the users, depending on a minimum required quality of service (QoS), measured in terms of user capacity constraint. The proposed method was tested and compared to the optimal branch and Cut solution and has shown good robustness against network and user parameters.

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“…So that, the Channelaware/QoS-aware strategies are very essential for them. Several well-known scheduling algorithms for this group as the Modified Largest Weighted Delay First (M-LWDF) [6], the Exponential/PF (EXP/PF) [16], the LOG and EXP rules [17] or the Frame Level Scheduler (FLS) [14]. In these schedulers, there is only the FLS which guarantees bounded delay for real-time flows, the remaining schedulers transmits users data in a given Transmission Time Interval (TTI) by assigning a computed priority metric that is specific to the scheduler functionality.…”

Section: Introductionmentioning

confidence: 99%

A new Channel- and QoS-Aware scheduling Scheme for Real-time Services in LTE Network

Nguyen¹,

Nguyen²,

Renault³

2016

IJAIS

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This paper proposes a new scheduling scheme which is based on Channel-and QoS-Aware for real-time traffics in LTE downlink direction. The real-time services (VoIP, Video, etc.) are very sensitive to network impairments such as delay, packet loss, jitter, etc. The proposed scheduling scheme considers Maximum Queue Size (MQS) as an essential factor for the priority metric and the combination of well-known M-LWDF-based algorithms such as M-LWDF, VT-MLWDF and Queue-HOL-MLWDF. The simulation results show that the proposed scheme has the performance which not only satisfies QoS requirements of realtime services but also outperforms the M-LWDF, VT-MLWDF and Queue-HOL-MLWDF schedulers in terms of Packet Loss Rate (PLR), cell throughput, Fairness Index (FI) and Spectral Efficiency (SE), especially for Video flow. The proposed scheduler also significantly improves the delay in comparison with the VT-MLWDF and Queue-HOL-MLWDF schedulers ones for both VoIP and Video flows. The performance evaluation is compared in terms of Delay, PLR, Throughput, FI and SE for M-LWDF, VT-MLWDF, Queue-HOL-MLWDF and the proposed schedulers.

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Two-Level Downlink Scheduling for Real-Time Multimedia Services in LTE Networks

Cited by 209 publications

References 24 publications

Utility Based Scheduling and Call Admission Control for Long Term Evolution Networks

Utility Based Scheduling and Call Admission Control for Long Term Evolution Networks

Near optimal linear-service oriented resource allocation strategy for LTE networks

A new Channel- and QoS-Aware scheduling Scheme for Real-time Services in LTE Network

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