Abstract
This study aims to provide a good real-time multimedia performance under the presence of mobile cellular channel impairments by proposing a novel packet scheduling algorithm that adapts the well-known single carrier Maximum Largest Weighted Delay First (M-LWDF) algorithm into the multi-carrier downlink Long-Term Evolution-Advanced (LTE-A). The proposed algorithm prioritizes packets that require retransmission as compared to new packets. Packet scheduling of new packets is performed per mobile cellular channel basis. Simulation results demonstrate the efficacy of the proposed algorithm where it is capable in providing good real-time multimedia experience for more users and is more robust towards the impact of mobile cellular channel impairments as compared to a benchmark algorithm.
Highlights
Long Term Evolution-Advanced (LTE-A) is an emerging mobile cellular technology standardized by the Third Generation Partnership Project (3GPP) organization in its attempt to meet the International Mobile Telecommunications Advanced (IMTAdvanced) requirements
The present state of the Maximum Largest Weighted Delay First (M-LWDF) algorithm may not be suited for implementation in multi-carrier downlink LTE-A because it does not account for the situation where multiple Component Carriers (CCs) are available and scheduling is performed in both time and frequency domains
The performance of the Adapted-M algorithm is evaluated and compared with another adapted MLWDF algorithm (Ramli and Riezman, 2015). This algorithm was considered as the well-known M-LWDF algorithm developed in Andrews et al (2001) does not account the situation where (i) multiple CCs are available and scheduling is performed in both time and frequency domains and (ii) retransmitting packets are not available
Summary
Long Term Evolution-Advanced (LTE-A) is an emerging mobile cellular technology standardized by the Third Generation Partnership Project (3GPP) organization in its attempt to meet the International Mobile Telecommunications Advanced (IMTAdvanced) requirements. The LTE-A is expected to support 100 Mbps peak data rates for highly mobile users and 1 Gbps peak data rates for low mobility users. A high peak data rate in LTE-A is rationalized via carrier aggregation. Carrier aggregation is a method that aggregates two or more Component Carriers (CCs) of the same or different frequency spectrums. LTE-A has a simplified architecture that contains only enhanced Node B (eNodeB) at the Evolved Universal Terrestrial Radio Access Network (E-UTRAN). The eNodeB connects users to the core network and performs all Radio Resource Management (RRM) functions
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