A Dynamic Downlink Load Control Scheme for WCDMA and HSDPA Systems
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概要
- 論文の詳細を見る
Mutual interference among users can abruptly increase othercell interference and cause overload situation in coexisting WCDMA and HSDPA systems. Traffic overloading can degrade the performance of the systems. This letter proposes a new dynamic downlink load control (DDLC) algorithm to reduce performance degradation due to overload in the coexistence of WCDMA and HSDPA systems. With the proposed algorithm, the downlink load is controlled according to load states classified by two load-control thresholds, and traffic overloading is alleviated by dynamically adjusting the CQI values reported by users, based on the downlink load as well as channel variations. The proposed algorithm is simulated and results show that the DDLC scheme improves the performance of both WCDMA and HSDPA systems in terms of outage probability, total system throughput, and radio resource utilization.
- （社）電子情報通信学会の論文
- 2009-06-01
著者
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Kang Chang
Dept. Of Information And Communication Eng. Changwon National University
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KIM Junsu
Dept. of EECS, Korea Advanced Institute of Science and Technology
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SUNG Dan
Dept. of EECS, Korea Advanced Institute of Science and Technology
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Sung Dan
Dept. Of Eecs Korea Advanced Institute Of Science And Technology
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Sung Dan
Dept. Of Eecs At Korea Advanced Institute Of Science & Technology (kaist)
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Kim Junsu
Dept. Of Eecs Korea Advanced Institute Of Science And Technology
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