In-depth understanding, analysis, and classification of wimax scheduling state-of-the-art for effective practical scheduler design and development

Abstract

Packet scheduler is an important component of WiMAX MAC layer that helps to provide Quality of Service (QoS) guarantee to various service classes of WiMAX systems. Providing an in-depth understanding, analysis, and classifications of WiMAX scheduling schemes is of utmost importance toward designing effective practical schedulers. This article provides a comprehensive survey of various WiMAX scheduling schemes for both point-to-multipoint and multi-hop relay systems. We first discuss on an existing QoS architecture of conventional WiMAX systems, then we make a comprehensive classification and in-depth analysis of the current state-of-theart of single-and multi-hop relay systems which further classifies the scheduling schemes based on the use of channel state condition, queue state, and type of scheduling scheme. We also highlight detailed descriptions of various design aspects, objectives, methodologies, and limitations of the previously proposed researches. After extensively reviewing literatures on scheduling mechanisms, we found out that there still remain many issues and consideration in the previously scheduler designs. Hence, we discussed on the main important aspects related to schedulers design to assist researchers, network designers, and Internet Service Providers in designing effective practical schedulers for single-hop or multi-hop relay systems. Finally, the article concludes on the research gaps found in the previously discussed researches and outlines open research issues for future work.

Toward 5G High Utilizations: A survey on OFDMA-based Resource Allocation Techniques in Next-Generation Broadband Wireless Access Networks

“…A comprehensive survey of various LTE scheduling schemes for both point-to-multipoint and multi-hop relay systems performed in [7]. The authors discussed researches on the main important aspects component of LTE MAC layer that helps to provide QoSa guarantee to various service classes in order to assist network designers, researchers, and Internet service providers in designing effective practical schedulers for single-hop or multi-hop relay systems In this section, we discuss the bandwidth algorithms in both two layer LTE MAC and PHY layers in both DL and UL directions.…”

Review of WiMAX Scheduling Algorithms and Their Classification

“…1), q(k) = queue size at frame k, s(k) = number of Packets served at frame k. If the number of rtPS packets are high, the EDF algorithm starves in scheduling BE traffic class. The provision for scheduling BE traffic given by (8) can be made by modifying (7) as…”

“…The summary of scheduling mechanisms is reported in [5,6]. The analysis of various WiMAX scheduling algorithms has been published by Puranik et al in [7] and Byan et al in [8]. Recently in 2014 the issue of QoS implemented in WiMAX network employing various scheduling algorithms has appeared in [9].…”