A Comparative Analysis of Packet Scheduling Schemes for Multimedia Services in LTE Networks

Abstract

The revolution in high-speed broadband network is the requirement of the current time, in other words here is an unceasing demand for high data rate and mobility. Both provider and customer see, the long time evolution (LTE) could be the promising technology for providing broadband, mobile Internet access. To provide better quality of service (QoS) to customers, the resources must be utilized at its fullest impeccable way. Resource scheduling is one of the important functions for remanufacturing or upgrading system performance. This paper studies the recently proposed packet scheduling schemes for LTE systems. The study has been concentrated in implication to real-time services such as online video streaming and Voice over Internet Protocol (VOIP). For performance study, the LTESim simulator is used. The primary objective of this paper is to provide results that will help researchers to design more efficient scheduling schemes, aiming to get better overall system performance. For the simulation study, two scenarios, one for video traffic and other for VoIP have been created. Various performances metric such as packet loss, fairness, end-to-end (E2E) delay, cell throughput and spectral efficiency has been measured for both the scenarios varying numbers of users. In the light of the simulation result analysis, the frame level scheduler (FLS) algorithms outperform other, by balancing the QoS requirements for multimedia services.

Dynamic resource management algorithms for interference prediction in 5G new radio scenarios

“…Consequently, the propagation channel is considered to be time-invariant and error-free channel. The packet with the minimum deadline (the minimum , ) will be first scheduled [32], as shown in (4). W i,j_EDF = ∑ min(l_deadline, r_deadline) n i=0 (4)…”

“…It tries to minimize the delay in order to maintain a balance between the data rate and the average waiting time. This minimization was achieved by compromising the throughput of all the UEs, then the delay [32].…”

Study on mechanism and reduction approaches of delay spikes occurrence on mobile networks

“…The delay on mobile networks is increased by not only network congestion but also radio quality degradation such as interference and attenuation of radio waves. Sahoo et al [2] observed that the delay of VoIP packets were almost uniform regardless of the degree of congestion. Despite that, delay increases more than 100 milliseconds were measured on mobile networks [3], [4], [5], [6], [7].…”

Algoritmo de escalonamento de pacote usando policiamento de tráfego em redes LTE downlink

“…Existem muitos trabalhos de pesquisas propostos e estudados pela comunidade acadêmica sobre o escalonamento de pacotes no sistema LTE na transmissão downlink, simulado com a ferramenta LTE-Sim, entre eles temos [22], [24], [31], [37], [45], [55], [65], [56]. Dentre estes trabalhos, uma quantidade considerável de trabalhos avaliam o desempenho dos principais escalonadores na transmissão downlink.…”

“…As técnicas orientadas a minimizar os atrasos de transmissão dos pacotes, tendo em conta os fatores de prioridade do determinado serviço e o estado da fila de cada usuário, são estudadas em [42], [48], [66]. Uma quantidade consideravel de trabalhos avaliaram o desempenho dos principais escalonadores de pacotes na transmissão downlink, entre eles temos [22], [24], [31], [37], [45], [46], [55], [64], [65]. Todos os trabalhos tem como finalidade de fornecer resultados que ajudem os novos projetos de escalonamento de pacotes no sistema LTE, visando obter o melhor nível de desempenho dos usuários e garantir a qualidade de serviço requisitada (QoS).…”