NDLI: Selection of transmission points for delay minimization in LTE-A heterogeneous networks with low-power RRHs

Content Provider	IEEE Xplore Digital Library
Author	Cheng-Pang Chien Kai-Min Yang Hung-Yun Hsieh
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan (Cheng-Pang Chien; Kai-Min Yang; Hung-Yun Hsieh)
Abstract	Heterogeneous network with small cells has recently been regarded as a promising scenario in LTE-Advanced systems. In particular, transmission point selection for heterogeneous networks with low-power nodes has drawn attention. We consider in this paper a scenario where a set users is admitted to a macrocell, but it is yet to be determined how each user is served solely or cooperatively by the set of subordinate transmission points in the cell. Unlike related work that focuses on maximizing the system throughput, we formulate a joint optimization problem of transmission point selection and resource allocation to minimize the total transmission delay of users in the cell. The formulated problem is NP-hard, and thus we propose an algorithm based on overlapping clustering and Gibbs sampler for solving the problem. Simulation results show that, compared to related approaches, the total transmission delay can be reduced by 34% and the Jain's fairness index can be increased to 0.9 on average.
Starting Page	783
Ending Page	788
File Size	491635
Page Count	6
File Format	PDF
ISBN	9781467359382
ISSN	15253511
e-ISBN	9781467359399
e-ISBN	9781467359375
DOI	10.1109/WCNC.2013.6554663
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delays Joints Resource management Optimization Throughput Linear programming Equations
Content Type	Text
Resource Type	Article

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