NDLI: Cooperative user relaying assisted load balancing scheme for OFDMA based cellular networks

Content Provider	IEEE Xplore Digital Library
Author	Dantong Liu Yue Chen Kok Keong Chai
Copyright Year	2012
Description	Author affiliation: School of Electronic Engineering and Computer Science, Queen Mary University of London, London, United Kingdom (Dantong Liu; Yue Chen; Kok Keong Chai)
Abstract	Load balancing is one of the radio resource management functionalities for tackling the hotspot problem caused by bursty and unevenly distributed traffic. In the conventional handover based load balancing schemes, the shifted cell edge users will suffer Signal to Noise (SNR) degradation problem due to the poorer channel condition of the new link. In this paper, a cooperative user relaying assisted load balancing scheme is proposed to address this problem. In the proposed scheme, an edge user of a heavy-loaded hotspot cell can be handed over to a light-loaded neighbour cell by selecting an appropriate inactive user in the light-loaded cell as the user relay for cooperative transmission. The intention is to take the advantage of the cooperative diversity gain to counter act the SNR degradation. In the paper, the concept and procedures of the proposed cooperative user relay assisted load balancing scheme is presented. The theoretical analysis and simulation evaluations of the scheme are undertaken. Simulation results show that the proposed scheme can effectively balance the load between cells, improve SNR of the shifted cell edge users, enhance the system throughput and deduce the system call blocking probability.
Starting Page	128
Ending Page	133
File Size	1288265
Page Count	6
File Format	PDF
ISBN	9781467322010
e-ISBN	9781467322041
DOI	10.1109/ICNIDC.2012.6418726
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cellular networks Cooperative user relay Handover Load management Throughput OFDMA Load balancing Relays Mutual information Signal to noise ratio
Content Type	Text
Resource Type	Article

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