Q-learning based cell selection for UE outage reduction in heterogeneous networks

Toshihito Kudo, Tomoaki Ohtsuki

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

Cell range expansion (CRE) is a load balancing technique that virtually expands a pico cell range by adding a bias value to the pico received power, instead of increasing transmit power of the pico base station (PBS); It can make cell-edge throughput and overall network throughput improved. CRE disperses the load of macro base stations (MBSs) on PBSs, so that it can reduce the number of UE outages. Although the configuration of the bias values of each user equipment (UE) has potential to reduce UE outages compared with the common bias value configuration among UEs, the common one is applied in the majority of related works for simplicity. In this article, we propose a scheme to select a cell by using Q-learning algorithm where each UE learns to which cell to send a service request to reduce the number of UE outages from its past experience independently. Simulation results show that the proposed scheme has the minimum number of UE outages in the system. Moreover, they show that it reduces the number of UE outages and the required memory size, compared with our previous proposed method.

本文言語English
ホスト出版物のタイトル2014 IEEE 80th Vehicular Technology Conference, VTC2014-Fall, Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781479944491, 9781479944491
DOI
出版ステータスPublished - 2014 11 24
イベント80th IEEE Vehicular Technology Conference, VTC 2014-Fall - Vancouver, Canada
継続期間: 2014 9 142014 9 17

出版物シリーズ

名前IEEE Vehicular Technology Conference
ISSN(印刷版)1550-2252

Other

Other80th IEEE Vehicular Technology Conference, VTC 2014-Fall
国/地域Canada
CityVancouver
Period14/9/1414/9/17

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 応用数学

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