MAC-LTE scheduler modeling and performance evaluation in LTE network

Bouchemal, Naila; Izri, Nora; Tohmé, Samir

doi:10.1109/pimrc.2014.7136314

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…Here, λ ′ is the arrival rate of application traffic at the MAC layer of the UE and λ ′ is set according to traffic types [43], [44].…”

Section: A System Modelmentioning

confidence: 99%

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RETALIN: A Queue Aware Uplink Scheduling Scheme for Reducing Scheduling Signaling Overhead in 5G NR

Gautam,

Tamma

2024

IEEE Access

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Flexible numerology in 5G New Radio (NR) helps to reduce End-to-End (E2E) delay by supporting different slot duration options. But, higher numerologies can increase signaling overhead (in terms of Scheduling Requests (SRs) in uplink (UL)) for applications which are UL heavy in nature; as a consequence, the E2E delay of such applications could be impacted. This sudden increase in SRs in UL happens when the timing of the Constant-Bit-Rate (CBR) UL transmission is not properly aligned with the slot duration of the numerology employed and aggressive emptying of the buffered data at the User Equipments (UEs) by the UL scheduler. In this work, to minimize SRs while meeting the latency requirements of the UL heavy applications like vehicular applications, we propose a novel UL MAC scheduling algorithm named RETALIN. The proposed RETALIN is a queue-aware radio resource scheduler that estimates the probability of SR with respect to each UE (vehicle) and anatomizes the transient queue behavior by controlling backlogs of the UEs in order to reduce SRs and thereby mitigating an adverse impact of numerology in the UL traffic while keeping a bound on E2E delay of the vehicular applications. Extensive NS-3 simulations are performed to evaluate the performance of the proposed RETALIN scheme with mobility traces taken from Simulation of Urban Mobility (SUMO) using OpenStreetMap. Simulation results show that the proposed RETALIN scheduling scheme significantly reduces link delay for different numerologies when compared with a state-of-art QoS scheduler. Further, RETALIN increases Packet Delivery Ratio (PDR) while reducing signaling overhead due to SRs for UL scheduling. In the case of a High Definition Map (HD Map) vehicular application, RETALIN assists in increasing the Offloading Success Rate (OSR) over the QoS scheduler.INDEX TERMS 5G New Radio (NR), Vehicle to Everything (V2X), Network Simulator 3 (NS-3), Numerology, Radio Resource Management, Uplink scheduling.

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“…Here, λ ′ is the arrival rate of application traffic at the MAC layer of the UE and λ ′ is set according to traffic types [43], [44].…”

Section: A System Modelmentioning

confidence: 99%

“…All simulation experiments are carried out over the NS-3 based 5G-LENA [50] module, which is used to realize 5G connections for the vehicles. Different simulation parameters are listed in Table 3 and set according to [6], [16], [32], [43], [44].…”

Section: B Simulation Setupmentioning

confidence: 99%

RETALIN: A Queue Aware Uplink Scheduling Scheme for Reducing Scheduling Signaling Overhead in 5G NR

Gautam,

Tamma

2024

IEEE Access

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“…In [9], 3GPP defined a standard approach for LCP procedure. Author in [13] describe an analytical study & performance evolutional approach for the MAC scheduler in the DL direction. Many configurable parameters have been considered which directly influences the performance scheduling and resultant effect on the provisioned QoS.…”

Section: Related Workmentioning

confidence: 99%

QoS Aware Logical Channel Prioritization under Burst Resource Allocation for Uplink in LTE

Kumar¹,

Kashyap²

2017

IJITCS

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“…We measured the performance in terms of end-to-end average Transmission Control Protocol (TCP) throughput and delay. While there is significant work on the performance of different schedulers in the absence of AQM-based buffer management [4] and handover [8], it is very difficult to capture the effect of both on the scheduling algorithms using analytical models.…”

Section: Introductionmentioning

confidence: 99%

Effect of AQM-Based RLC Buffer Management on the eNB Scheduling Algorithm in LTE Network

et al. 2017

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Abstract:With the advancement of the Long-Term Evolution (LTE) network and smart-phones, most of today's internet content is delivered via cellular links. Due to the nature of wireless signal propagation, the capacity of the last hop link can vary within a short period of time. Unfortunately, Transmission Control Protocol (TCP) does not perform well in such scenarios, potentially leading to poor Quality of Service (QoS) (e.g., end-to-end throughput and delay) for the end user. In this work, we have studied the effect of Active Queue Management (AQM) based congestion control and intra LTE handover on the performance of different Medium Access Control (MAC) schedulers with TCP traffic by ns3 simulation. A proper AQM design in the Radio Link Control (RLC) buffer of eNB in the LTE network leads to the avoidance of forced drops and link under-utilization along with robustness to a variety of network traffic-loads. We first demonstrate that the original Random Early Detection (RED) linear dropping function cannot cope well with different traffic-load scenarios. Then, we establish a heuristic approach in which different non-linear functions are proposed with one parameter free to define. In our simulations, we demonstrate that the performance of different schedulers can be enhanced via proper dropping function.

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MAC-LTE scheduler modeling and performance evaluation in LTE network

Cited by 5 publications

References 3 publications

RETALIN: A Queue Aware Uplink Scheduling Scheme for Reducing Scheduling Signaling Overhead in 5G NR

RETALIN: A Queue Aware Uplink Scheduling Scheme for Reducing Scheduling Signaling Overhead in 5G NR

QoS Aware Logical Channel Prioritization under Burst Resource Allocation for Uplink in LTE

Effect of AQM-Based RLC Buffer Management on the eNB Scheduling Algorithm in LTE Network

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