Parameter optimization using local search for CRE and eICIC in heterogeneous network

Kurumi Yamamoto, Tomoaki Ohtsuki

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

In heterogeneous network where picocells are overlaid onto macrocells, combined usage of cell range expansion (CRE) and enhanced inter-cell interference coordination (eICIC) is very effective in improving the system capacity. Two parameters of the CRE bias value and the ratio of ABS (almost blank subframe) affect each other. Thus, the comprehensive control of both parameters is very important to improve the system capacity and fairness among user equIPments (UEs). The conventional parameter optimization method, which uses the Nash bargaining solution, can keep fairness among UEs, while improving system throughput. However, a fixed pair of these parameters used in this method is not always appropriate due to varying distribution of UEs. In this paper, we focus on a convex characteristic of the cell-edge UE capacity for the ABS ratio and propose a parameter optimization using local search with small computational complexity. Simulation results show that parameter setting by the proposed scheme improves system capacity and cell-edge UE capacity, compared with the conventional approach.

本文言語English
ホスト出版物のタイトルIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
出版社Institute of Electrical and Electronics Engineers Inc.
ページ1536-1540
ページ数5
2015-June
ISBN(印刷版)9781479949120
DOI
出版ステータスPublished - 2015 6月 25
イベント2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014 - Washington, United States
継続期間: 2014 9月 22014 9月 5

Other

Other2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014
国/地域United States
CityWashington
Period14/9/214/9/5

ASJC Scopus subject areas

  • 電子工学および電気工学

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