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http://dx.doi.org/10.9708/jksci.2010.15.6.049

Cross-Layer Optimized Resource Allocation Scheme for OFDMA based Micro Base Stations  

Cho, Sung-Hyun (국립경상대학교 컴퓨터과학부)
Publication Information
Journal of the Korea Society of Computer and Information / v.15, no.6, 2010 , pp. 49-56 More about this Journal
Abstract
In this paper, a joint PHY-MAC layer optimized resource allocation scheme for OFDMA based micro base stations is investigated. We propose cross-layer optimized two-stage resource allocation scheme including cross-layer functional description and control information flow between PHY-MAC layers. The proposed two-stage resource allocation scheme consists of a user grouping stage and a resource allocation stage. In the user grouping stage, users are divided into a macro base station user group and a micro base station user group based on the PHY-MAC layer characteristics of each user. In the resource allocation stage, a scheduling scheme and an allotment of resources are determined. In the proposed scheme, diversity and adaptive modulation and coding (AMC) schemes are exploited as schedulers. Simulation results demonstrate that the proposed scheme increases the average cell throughput about 40~80 % compared to the conventional system without micro base stations.
Keywords
Micro base station; resource allocation; cross-layer optimization; diversity;
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