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	Best-fit Cell Attachment for Decoupling DL/UL to Promote Traffic Offloading in HetNets
	Yang, Hemin ; Huang, Anpeng ; Xie, Linzhen
	2015
关键词	Heterogeneous Networks (HetNets) Downlink-Uplink Decouple Traffic Offtoading Best-Fit Cell Attachment NETWORKS SYSTEM
英文摘要	Heterogeneous Networks (HetNets), in which small cells are ultra-densely deployed within a macro cell, is widely regarded as a key solution to mobile traffic offloading. However, this kind of traffic offloading is confronted by two challenges. Firstly, the number of users in any small cell is really limited due to the larger power gap between macros and small cells in HetNets. In return, this phenomenon may degrade traffic offloading performance. Secondly, spectrum efficiency may be deteriorated since uplink channel states are not involved in the conventional cell attachment strategies. To address these challenges, we propose a best-fit cell attachment where downlink and uplink are decoupled and attached to cells independently. Specifically, in this paper, we conceive best-fit strategies for downlink and uplink cell attachment, for taking into account of both channel quality and cell load. And then, their implementation issues in different scenarios are discussed in detail. System-level simulation results demonstrated that our proposal can effectively offload traffic from macros to small cells, and improve data rates for cell-edge users significantly.; EI; CPCI-S(ISTP); yhm11@pku.edu.cn; hapku@pku.edu.cn; tydxlz@pku.edu.cn; 3466-3471; 2015-September
语种	英语
出处	2015 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC)
DOI标识	10.1109/ICC.2015.7248861
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/436663]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Yang, Hemin,Huang, Anpeng,Xie, Linzhen. Best-fit Cell Attachment for Decoupling DL/UL to Promote Traffic Offloading in HetNets. 2015-01-01.

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