完整後設資料紀錄
DC 欄位語言
dc.contributor.authorHsu, Ching-Kuoen_US
dc.contributor.authorLiang, Jia-Mingen_US
dc.contributor.authorWu, Kun-Ruen_US
dc.contributor.authorChen, Jen-Jeeen_US
dc.contributor.authorTseng, Yu-Cheeen_US
dc.date.accessioned2020-07-01T05:21:19Z-
dc.date.available2020-07-01T05:21:19Z-
dc.date.issued2020-02-01en_US
dc.identifier.issn1022-0038en_US
dc.identifier.urihttp://dx.doi.org/10.1007/s11276-019-02210-4en_US
dc.identifier.urihttp://hdl.handle.net/11536/154400-
dc.description.abstractIn 5G mobile communications, Cloud-RAN (C-RAN) (Camps-Mur et al. in IEEE Commun Mag 57:99-105, 2019) is proposed to provide broadband services. It separates computation entities, i.e., baseband units (BBUs), from base stations and puts all BBUs in a centralized cloud. Existing researches have investigated how to enhance user equipments (UEs) to receive data from multiple collaborative cells by leveraging the dynamic point selection(DPS) technology. Collaborative transmission may cause higher energy consumption for UEs. Although 3GPP has defined the discontinuous reception (DRX) mechanism by regulating UEs to turn off their radio interfaces in a periodical manner, how to well coordinate DRX with DPS under the C-RAN architecture is still left as an open issue. This paper is the first one addressing this resource optimization problem in C-RAN with DPS, which asks how to optimize DRX parameters of UEs by considering their quality-of-service (QoS). We prove this problem to be NP-complete, and then propose two effective and efficient DPS solutions, called serving-ratio(SR) scheme and cost-aware (CA) scheme. SR serves UEs based on a special 'serving ratio' to ensure UEs receiving continuous subframes, especially for those in cell intersections. On the other hand, CA exploits the strategies of minimal scheduling costs to balance energy and throughput efficiency in a perspective way. Extensive simulation results validate that our schemes can successfully achieve higher system throughput, provide better resource utilization, and serve more UEs while guaranteeing their QoS and saving considerable energy as compared to existing schemes.en_US
dc.language.isoen_USen_US
dc.subject5Gen_US
dc.subjectCloud radio access network (C-RAN)en_US
dc.subjectDiscontinuous reception (DRX)en_US
dc.subjectDynamic point selection (DPS)en_US
dc.subjectPower savingen_US
dc.subjectSleep schedulingen_US
dc.titleEnhanced scheduling schemes with energy conservation for dynamic point selection in cloud radio access networksen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/s11276-019-02210-4en_US
dc.identifier.journalWIRELESS NETWORKSen_US
dc.citation.volume26en_US
dc.citation.issue2en_US
dc.citation.spage1519en_US
dc.citation.epage1534en_US
dc.contributor.department交大名義發表zh_TW
dc.contributor.department資訊工程學系zh_TW
dc.contributor.departmentNational Chiao Tung Universityen_US
dc.contributor.departmentDepartment of Computer Scienceen_US
dc.identifier.wosnumberWOS:000527017300050en_US
dc.citation.woscount0en_US
顯示於類別:期刊論文