Coordinated multipoint transmission and reception in LTE-advanced_deployment scenarios

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1、LEELAYOUT1/25/125:18PMPage148LTE-ADVANCEDAND4GWIRELESSCOMMUNICATIONSCoordinatedMultipointTransmissionandReceptioninLTE-Advanced:DeploymentScenariosandOperationalChallengesDaewonLeeandHanbyulSeo,LGElectronicsBrunoClerckx,SamsungElectronicsEricHardouin,OrangeLabsDavidMazzares

2、e,HuaweiTechnologiesSatoshiNagata,NTTDOCOMOKrishnaSayana,MotorolaMobilityABSTRACTandreceptiontechniquesutilizemultipletrans-mitandreceiveantennasfrommultipleantenna3GPPhascompletedastudyoncoordinatedsitelocations,whichmayormaynotbelongtomultipointtransmissionandreceptiontec

3、h-thesamephysicalcell,toenhancethereceivedniquestofacilitatecooperativecommunicationssignalqualityaswellasdecreasethereceivedacrossmultipletransmissionandreceptionspatialinterference.Thisarticleisanoverviewpoints(e.g.,cells)fortheLTE-Advancedsystem.ofpotentialCoMPtechnologi

4、esandtheirkeyInCoMPoperation,multiplepointscoordinatedeploymentscenarios,whichhavebeenidenti-witheachotherinsuchawaythatthetransmis-fiedduringtheCoMPstudyperformedbythesionsignalsfrom/tootherpointsdonotincurThirdGenerationPartnershipProject(3GPP)seriousinterferenceorevencan

5、beexploitedasfortheLongTermEvolution(LTE)-Advancedameaningfulsignal.Thegoalofthestudyistostandarddevelopment.Thearticlealsodiscussesevaluatethepotentialperformancebenefitsofpracticalimplementationaspectsaswellasoper-CoMPtechniquesandtheimplementationationalchallengesforCoMP

6、.ThefocusoftheaspectsincludingthecomplexityofthestandardsarticleisonthedownlinkCoMPaspectssincesupportforCoMP.ThisarticlediscussessomeofuplinkCoMPtechnologiestendtohavelessthedeploymentscenariosinwhichCoMPtech-standardimpact;indeed,thereceiverprocessingniqueswilllikelybemos

7、tbeneficialandprovidesatthenetworksidecanbeperformedinamoreanoverviewofCoMPschemesthatmightbetransparentwaytotheUE.Notethatthemech-supportedinLTE-Advancedgiventhemodernanismsdiscussedinthisarticleapplytobothfre-silicon/DSPtechnologiesandbackhauldesignsquency-divisionduplex(

8、FDD)andtime-divisionavailabletoday.Inaddition,practicalimplemen-duplex(TDD)modesof