A Hybrid Downlink Scheduling Approach for Multi-Traffic Classes in LTE Wireless Systems

Nasralla, Moustafa M.

doi:10.1109/access.2020.2990381

Cited by 39 publications

(27 citation statements)

References 36 publications

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“…These schedulers are available in LTE-SIM. According to [38], [39], [43], [44], they are chan-nel sensitive, i.e., UE intermittently forwards a CQI report to the HeNB. This CQI report presents the channel quality experienced by each UE and estimated by the scheduler.…”

Section: B Packet Schedulersmentioning

confidence: 99%

“…This type of approach is the most suitable for the considered video application. In terms of quality service, PF is a scheduler with an approach unaware of the service type [43], [44].…”

Section: B Packet Schedulersmentioning

confidence: 99%

“…This work is in some way complementary to other simulation works, such as [4], [43], [44], since it presents a higher number of deployed HeNBs and a path loss model that considers and counts the number of walls between users and HeNBs. For simulation purposes, although fewer schedulers are considered for the simulation than in [43] and changes to existing schedulers are not considered as in [44], in this work, an in-depth determination of the variation in the number of supported users in saturation conditions, as a function of the apartment side length and the transmitter power is carried out with narrower confidence intervals.…”

Section: Introductionmentioning

confidence: 96%

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An Extensive Study on the Performance Evaluation and Scheduling of HeNBs

Paulo

Velez

2021

IEEE Access

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Since the dawn of mobile communication systems, reducing the cell size has been one option to increase the signal-to-interference-plus-noise ratio (SINR) in both links. The impact of this reduction can be perfectly understood by considering Shannon's law. This work studies in detail the performance of Home eNBs (HeNBs), nodes with a smaller coverage area. After a detailed theoretical study of the SINR, a simulation approach is used to extract performance results in small cell indoor scenarios. Results corresponding to the goodput, delay and packet loss ratio are analyzed. Based on an improved version of LTE-Sim, the proportional fair, frame level scheduler (FLS) and exponential rule are tested in an indoor environment. With the saturation conditions taken into consideration, the FLS performs better than the other schedulers. This work shows that with the considered applications, it is possible to achieve a reduction in the transmitter power of HeNBs without compromising the small cell network performance.

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Section: B Packet Schedulersmentioning

confidence: 99%

“…This type of approach is the most suitable for the considered video application. In terms of quality service, PF is a scheduler with an approach unaware of the service type [43], [44].…”

Section: B Packet Schedulersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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An Extensive Study on the Performance Evaluation and Scheduling of HeNBs

Paulo

Velez

2021

IEEE Access

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“…Among others, one can observe the work of Venkatesh et al [6] about a QoS-aware routing protocol for video streaming in MANETs. In addition, another QoSaware strategy is balanced between real-time and non-realtime traffic [7]. In general, online interactive transmission may benefit from real-time communication without disruptions being the latter one of the most critical aspects.…”

Section: Introductionmentioning

confidence: 99%

MASEMUL: A Simulation Tool for Movement‐Aware MANET Scheduling Strategies for Multimedia Communications

Nasralla

García‐Magariño

Lloret

2021

Wireless Communications and Mobile Computing

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The last decade has witnessed a steep growth in multimedia traffic due to real-time content delivery such as in online games and video conferencing. In some contexts, MANETs play a key role in the hyperconnectivity of everything in multimedia services. In this context, this work proposes a new scheduling approach based on context-aware mobile nodes for their connectivity. The contribution relies on reporting not only the locations of devices in the network but also their movement identified by sensors. In order to illustrate this approach, we have developed a novel agent-based simulator called MASEMUL for illustrating the proposed approach. The results show that a movement-aware scheduling strategy defined with the proposed approach has decreased the ratio of channel interruptions over another common strategy in mobile networks.

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“…As the consequence, the traffic rate for mobile communications will be increased to a greater extent. Quality of service (QoS) should be guaranteed in terms of delay, quality and data loss by LTE scheduling for mobile multimedia applications [11].…”

Section: Introductionmentioning

confidence: 99%

ITFDS: Channel-Aware Integrated Time and Frequency-Based Downlink LTE Scheduling in MANET

Tuấn

Sơn

Long

et al. 2020

Sensors

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One of the crucial problems in Industry 4.0 is how to strengthen the performance of mobile communication within mobile ad-hoc networks (MANETs) and mobile computational grids (MCGs). In communication, Industry 4.0 needs dynamic network connectivity with higher amounts of speed and bandwidth. In order to support multiple users for video calling or conferencing with high-speed transmission rates and low packet loss, 4G technology was introduced by the 3G Partnership Program (3GPP). 4G LTE is a type of 4G technology in which LTE stands for Long Term Evolution, followed to achieve 4G speeds. 4G LTE supports multiple users for downlink with higher-order modulation up to 64 quadrature amplitude modulation (QAM). With wide coverage, high reliability and large capacity, LTE networks are widely used in Industry 4.0. However, there are many kinds of equipment with different quality of service (QoS) requirements. In the existing LTE scheduling methods, the scheduler in frequency domain packet scheduling exploits the spatial, frequency, and multi-user diversity to achieve larger MIMO for the required QoS level. On the contrary, time-frequency LTE scheduling pays attention to temporal and utility fairness. It is desirable to have a new solution that combines both the time and frequency domains for real-time applications with fairness among users. In this paper, we propose a channel-aware Integrated Time and Frequency-based Downlink LTE Scheduling (ITFDS) algorithm, which is suitable for both real-time and non-real-time applications. Firstly, it calculates the channel capacity and quality using the channel quality indicator (CQI). Additionally, data broadcasting is maintained by using the dynamic class-based establishment (DCE). In the time domain, we calculate the queue length before transmitting the next packets. In the frequency domain, we use the largest weight delay first (LWDF) scheduling algorithm to allocate resources to all users. All the allocations would be taken placed in the same transmission time interval (TTI). The new method is compared against the largest weighted delay first (LWDF), proportional fair (PF), maximum throughput (MT), and exponential/proportional fair (EXP/PF) methods. Experimental results show that the performance improves by around 12% compared with those other algorithms.

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A Hybrid Downlink Scheduling Approach for Multi-Traffic Classes in LTE Wireless Systems

Cited by 39 publications

References 36 publications

An Extensive Study on the Performance Evaluation and Scheduling of HeNBs

An Extensive Study on the Performance Evaluation and Scheduling of HeNBs

MASEMUL: A Simulation Tool for Movement‐Aware MANET Scheduling Strategies for Multimedia Communications

ITFDS: Channel-Aware Integrated Time and Frequency-Based Downlink LTE Scheduling in MANET

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