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Performance evaluation of cross layer QoS scheduling for Long Term Evolution Network

Author(s): D. Vinayagam | R. Kurinjimalar | D. Srinivasan

Journal: International Journal of Advanced Computer Research
ISSN 2249-7277

Volume: 2;
Issue: 5;
Start page: 75;
Date: 2012;
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Keywords: Cross layer based Two-way Scheduling Algorithm (CTSA) | multi-service scheduling | LTE-Sim | cross layer | Priority based Two-way Scheduling Algorithm | QoS | LTE | 3.9G

The Cross layer based Two-way schedulingAlgorithm (CTSA) is proposed for scheduling bothReal Time (RT) and Non-Real Time (NRT) services.The advantage of the complimentary characteristicsof both RT and NRT services is utilized in CTSA toachieve a significant cell user throughput, a lowdelay, normalized fairness and a low packet lossratio. The CTSA is the adaptation of the twoscheduling algorithm supporting RT and NRT foreffective utilization of channel. The LTE-Simsimulation tool is used to simulate the CTSA undermulti-cell scenario environment for scheduling inthe LTE (Long Term Evolution) network. Theperformances of the CTSA using Proportional Fair(PF), Modified Long Weighted Delay First (MLWDF)and Exponential Proportional Fair(EXP/PF) schedulers are studied in terms ofthroughput, packet loss ratio, delay and cell spectralefficiency and fairness index. The simulation basedcomparison indicates that M-LWDF and EXP/PFscheduler outperforms PF scheduler especiallyduring RT service. The PF scheduler has highthroughput for NRT service. In all the simulations,the performance level of EXP/PF schedulingalgorithm for multi-service scheduling seems to bean optimal solution for guaranteeing required QoS(Quality of Service).
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