《Performance analysis for range expansion in heterogeneous networks》.pdf

SCIENCE CHINA InformationSciences · RESEARCH PAPER · August2014，Vo11-082305：10 doi：10．1007／s11432—014—5071—2 Perform anceanalysisforrangeexpansion in heterogeneousnetworks FEIZeSong，DINGHaiChuan，XINGChengWenNIJiQing＆KUANGJingMing Schoolof InformationandElectronics，BeijingInstituteofTechnology，Beijing100081．China ReceivedApril3，2013；accepted September11，2013；publishedonlineM ay 12 2014 ， Abstract Inthispaper，theuplinkanddownlinkperformanceofatwo—tierheterogeneousnetwork(HetNet) withrangeexpansion (RE)isanalyzed．Difrerentfrom previousworks，basestationsfBSs)aremodeledas a spatialPoisson pointprocess． Thismodelcan notonly capture theirregularity ofthe BSdeploymentbut alsoleadtoclosed forillexpressions．W ith theanalyticalresults theimpactsofseveralkey parameterson the ， coverageandthroughputperformanceareinvestigated OurresultsjustifiestheeffectivenessofREandPico deployment．Based on ouranalyses，certain attention should bem adeon theRE design to balancetheuDlink and downlinkperformance．Ouranalysesarecorroboratedbysimulationsand canthusserveasa flexibleand quick guidanceforsystem design withoutcomplicated and time．．consum ingsystem—．1evelplatform construction and simu1ation． K eywords HetNet，rangeexpansion，outageprobability throughput，Poisson pointprocess ， 1 Introduction Heterogeneousnetwork(HetNet)hasbeenadoptedbyvariouswirelessstandards，suchas3GPPlo