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Service Class-Aided Scheduling for LTE  

Hung, Pham (Dongguk University-Seoul)
Hwang, Seung-Hoon (Dongguk University-Seoul)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.48, no.11, 2011 , pp. 60-66 More about this Journal
Abstract
LTE (Long Term Evolution) supports QoS (Quality of Service) with several service classes. For each class of traffic, a big difference exists on BER (Bit Error Rate) requirement. This leads to a considerable difference in transmission power for various classes of traffic. In this paper, a novel scheduler is designed and proposed for LTE which supports CoS (Class of Service) with the consideration of priority as well as target BER. By the CQI (Channel Quality Indicator) and QCI (QoS Class Identifier), a minimum transmission power is assigned from the target BER for each class of traffic per each user. Hence, with the other information such as user's used rate in the past and the priority of traffic, the probability of occupying channels is determined. The simulation results of Service Class scheduling are compared with that of Maximum Rate and Proportional Fair. The results show that the service class-aided scheduling can improve the throughput of whole system significantly.
Keywords
Class of Service; Power Control; Scheduling; QoS; LTE; OFDM;
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