You-Chiun Wang Hung-Yi Ko Energy-Efficient Downlink Resource Scheduling for LTE-A Networks with Carrier Aggregation. 123-141 2017 33 J. Inf. Sci. Eng. 1 https://jise.iis.sinica.edu.tw/JISESearch/pages/View/PaperView.jsf?keyId=154_1998 db/journals/jise/jise33.html#WangK17