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1、LearningreportonGreenCellularCommunicationChunqiuWangnihaochunqiu@gmail.comIntroductionAccordingtoareport[2],humanindustrialactivitiesemittwicemoreCO2thannaturalprocessescanabsorbatthemoment.Amongtheenergy-consumingindustries,theInformationandCommunicationTechnology(ICT)industrytakes2%ofglobalt
2、otalCO2emissionsand3%ofglobalenergyexpenditure.Inparticular,57%oftheenergyconsumptionoftheICTindustryisattributedtousersandnetworkdevicesinmobileandwirelessnetworks.Thesegreenhousegases(GHGs)makestheEarthwarm,however,withtoomuchGHGs,itcausesglobalclimatechange,becomingtheincreasinglyseriousenvi
3、ronmentalproblemaroundtheworld.Ontheotherhand,withtheubiquitousapplicationofmoderncellularandwirelesstechnology,notonlyvoiceservices,butalsowiththeincreasingdemandofhighspeeddatatransmission,theexplosivedevelopmentofInformationandCommunicationTechnology(ICT)hassignificantlyenlargedboththeenergy
4、demandsandtheCO2emissions,andconsequentlycontributestomaketheenergycrisisandglobalwarmingproblemsworse.So,besidesthemainfocusofresearchonachievinghighdatarateofcellularcommunication,wemustfindenergy-effectivesolutionstoestablishlimitsonoverallemissionsofGHGs.DefinitionofGreencellularcommunicati
5、on“GreenCellularcommunication”,inshort,standsforthecommunicationcausinglessenvironmentalpollution,mainlyintwoaspects:withlessradiation;lesspowerassumptionorlessgreenhousegasemission.GreencommunicationtechniquesVariousresearchstudiesfocusonsignificantoptimizationorevenreconstructionofalllayersan
6、dcomponentsinthecellularcommunicationsystemsandthesetechniquescanbecategorizedintothreekinds:ProcessingtechniquesON/OFFresourceallocationofbackbonesDynamicschedulingalgorithmsInterferenceavoidanceAdaptivepower-savingdesignPrediction-basedadaptationCommunicationtechniquesPowersavingofPowerAmplif
7、ierCoverageoptimizationandpowercontrolUtilizationofmultipleradiosEnergyefficienttransmissionschemesSystemtechniquesCoolingmanagementOptimizationofcelldeploymentEnergy-efficientlocation-basedservices1.ON/OFFresourceallocationofback
