Paper Info
Title
Dynamic uplink coordinated multi-point scheme based on Range Expansion in Heterogeneous Networks
Abstract
In 3GPP Long Term Evolution (LTE) Heterogeneous Network (HetNet), the macro Base Station and the pico Base Station (BS) have very different transmit powers. So the traditional cell selection makes some users connected to a macro BS although they are geographically closer to a pico BS. These users would create severe uplink (UL) interference in HetNet. Range Expansion (RE) technique is one saving grace that could partly mitigate the UL interference problem. However, it may simultaneously bring new downlink (DL) interference. In this paper, firstly an Uplink Interference Identification Scheme based on Range Expansion is proposed to identify the main UL interference source accurately. Then a dynamic UL Coordinated Multi-Point (CoMP) scheme is applied to the main interference source to ease the UL interference in HetNet. The proposed CoMP scheme dynamically chooses coordinated BSs for an allocated user itself specifically. And the CoMP scheme has no direct relation with DL, which means that it would not bring new DL interference, compared to RE. Simulation results indicate that the dynamic UL CoMP scheme can bring nearly 25% gain to the average user Signal to Interference and Noise Ratio (SINR) and nearly 22% gain to the average user throughput.
Year
DOI
Venue
2014
10.1109/ICT.2014.6845118
ICT
Keywords
Field
DocType
comp scheme,uplink interference,heterogeneous network,radiofrequency interference,range expansion technique,uplink,signal to interference and noise ratio,downlink interference,dynamic uplink coordinated multipoint scheme,3g mobile communication,long term evolution,macrobase station,hetnet,range expansion,picobase station,coordinated multi-point,3gpp long term evolution heterogeneous network,dynamic,throughput,telecommunications,mathematical model,interference,signal to noise ratio
Computer science,Computer network,Heterogeneous network,Telecommunications link
Conference
Citations 
PageRank 
References 
0
0.34
3
Authors
3
Name
Order
Citations
PageRank
Weiyang Gong100.34
Hailun Xia24512.02
Chunyan Feng330538.57