Pay as You Want: Bypassing Charging System in Operational Cellular Networks

Author(s):  
Hyunwook Hong ◽  
Hongil Kim ◽  
Byeongdo Hong ◽  
Dongkwan Kim ◽  
Hyunwoo Choi ◽  
...  
Author(s):  
Bartłomiej Błaszczyszyn ◽  
Martin Haenggi ◽  
Paul Keeler ◽  
Sayandev Mukherjee

Author(s):  
Hoang Nhu Dong ◽  
Hoang Nam Nguyen ◽  
Hoang Trong Minh ◽  
Takahiko Saba

Femtocell networks have been proposed for indoor communications as the extension of cellular networks for enhancing coverage performance. Because femtocells have small coverage radius, typically from 15 to 30 meters, a femtocell user (FU) walking at low speed can still make several femtocell-to-femtocell handovers during its connection. When performing a femtocell-to-femtocell handover, femtocell selection used to select the target handover femtocell has to be able not only to reduce unnecessary handovers and but also to support FU’s quality of service (QoS). In the paper, we propose a femtocell selection scheme for femtocell-tofemtocell handover, named Mobility Prediction and Capacity Estimation based scheme (MPCE-based scheme), which has the advantages of the mobility prediction and femtocell’s available capacity estimation methods. Performance results obtained by computer simulation show that the proposed MPCE-based scheme can reduce unnecessary femtocell-tofemtocell handovers, maintain low data delay and improve the throughput of femtocell users. DOI: 10.32913/rd-ict.vol3.no14.536


2019 ◽  
Vol 3 (1) ◽  
pp. 118-126 ◽  
Author(s):  
Prihangkasa Yudhiyantoro

This paper presents the implementation fuzzy logic control on the battery charging system. To control the charging process is a complex system due to the exponential relationship between the charging voltage, charging current and the charging time. The effective of charging process controller is needed to maintain the charging process. Because if the charging process cannot under control, it can reduce the cycle life of the battery and it can damage the battery as well. In order to get charging control effectively, the Fuzzy Logic Control (FLC) for a Valve Regulated Lead-Acid Battery (VRLA) Charger is being embedded in the charging system unit. One of the advantages of using FLC beside the PID controller is the fact that, we don’t need a mathematical model and several parameters of coefficient charge and discharge to software implementation in this complex system. The research is started by the hardware development where the charging method and the combination of the battery charging system itself to prepare, then the study of the fuzzy logic controller in the relation of the charging control, and the determination of the parameter for the charging unit will be carefully investigated. Through the experimental result and from the expert knowledge, that is very helpful for tuning of the  embership function and the rule base of the fuzzy controller.


2007 ◽  
Author(s):  
Mung Chiang ◽  
Prashanth Hande ◽  
Tian Lan ◽  
Chee Wei Tan

2020 ◽  
Vol 15 (3) ◽  
pp. 235
Author(s):  
Eka Prasetyono ◽  
Luthfansyah Mohammad ◽  
Farid Dwi Murdianto

2009 ◽  
Vol E92-B (12) ◽  
pp. 3753-3764 ◽  
Author(s):  
Van-Duc NGUYEN ◽  
Harald HAAS ◽  
Kyandoghere KYAMAKYA ◽  
Jean-Chamerlain CHEDJOU ◽  
Tien-Hoa NGUYEN ◽  
...  
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document