当前位置: X-MOL首页全球导师 国内导师 › 杨旸

个人简介

招生专业 081001-通信与信息系统 085208-电子与通信工程 招生方向 未来移动通信系统关键技术研究 通信信号处理理论与技术 教育背景 学历 1992年9月~1996年6月,东南大学,无线电技术专业,工程学士 1996年9月~1999年3月,东南大学,移动通信国家重点实验室,通信与信息系统专业,工程硕士 1999年9月~2002年7月,香港中文大学,信息工程专业,博士 工作经历 2002年8月~2003年8月,香港中文大学,信息工程系,助理教授(AssistantProfessor) 2003年8月~2005年2月,英国布鲁奈尔大学(BrunelUniversity),电子与计算机工程系,讲师(Lecturer) 2005年3月~2008年4月,英国伦敦大学学院(UniversityCollegeLondon),电子与电气工程系,讲师,高级讲师(SeniorLecturer) 2008年4月~现在,中科院上海微系统与信息技术研究所,研究员,博导;上海无线通信研究中心,副主任,副总工。

研究领域

新一代移动通信系统(LTE/4G),无线自组织网络,无线MESH网络,协作和绿色通信技术

近期论文

查看导师新发文章 (温馨提示:请注意重名现象,建议点开原文通过作者单位确认)

RefereedJournalPapers [1]S.C.Ng,W.X.Zhang,Y.Zhang,Y.Yang,andG.Mao,“AnalysisofAccessandConnectivityProbabilitiesinVehicularRelayNetworks,”IEEEJournalonSelectedAreasinCommunications(JSAC),Vol.29,No.1,pp.140-150,Jan.2011. [2]S.Sayed,Y.Yang,andJ.Xu,“BTAC:ABusyToneBasedCooperativeMACProtocolforWirelessLocalAreaNetworks,”ACMMobileNetworksandApplications(MONE),Vol.16,No.1,pp.4-16,Jan.2010.DOI:10.1007/s11036-010-0267-1 [3]C.K.Chau,F.Qin,S.Sayed,M.H.Wahab,andY.Yang,“HarnessingBatteryRecoveryEffectinWirelessSensorNetworks:ExperimentsandAnalysis,”IEEEJournalonSelectedAreasinCommunications(JSAC),Vol.28,No.7,pp.1222-1232,Sept.2010. [4]K.Bur,P.Omiyi,andY.Yang,“WirelessSensorandActuatorNetworks:EnablingtheNervousSystemoftheActiveAircraft,”IEEECommunicationsMagazine,pp.118-124,July2010. [5]G.Yuan,R.Grammenos,Y.Yang,andW.Wang,“PerformanceAnalysisofSelectiveOpportunisticSpectrumAccesswithTrafficPrediction,”IEEETransactionsonVehicularTechnology,Vol.59,No.4,pp.1949-1955,May2010. [6]G.Yuan,X.Zhang,Y.Yang,andW.Wang,“CarrierAggregationforLTE-AdvancedMobileCommunicationSystems,”IEEECommunicationsMagazine,Vol.48,No.2,pp.88-93,Feb.,2010. [7]H.Hu,J.Zhang,X.Zheng,Y.Yang,andP.Wu,“Self-ConfigurationandSelf-OptimizationforLTENetworks,”IEEECommunicationsMagazine,Vol.48,No.2,pp.94-100,Feb.,2010. [8]Y.Yang,H.Hu,J.Xu,andG.Mao,“RelayTechnologiesforWiMAXandLTE-AdvancedMobileSystems,”IEEECommunicationsMagazine,Vol.47,No.10,pp.100-105,October2009. [9]X.Ge,Y.Yang,C.X.Wang,Y.Z.Liu,C.Liu,andL.Xiang,“CharacteristicsAnalysisandModelingofFrameTrafficin802.11WirelessNetworks,”JournalofWirelessCommunicationsandMobileComputing(WCMC),Vol.10,pp.584-592,October2009. [10]Y.Chen,J.Chen,andY.Yang,“Multi-hopDelayPerformanceinWirelessMeshNetworks,”ACMMobileNetworksandApplications,Vol.13,No.1/2,pp.160-168,April2008. [11]F.Huang,Y.YangandL.He,“AFlowBasedNetworkMonitoringFrameworkforWirelessMeshNetworks,”IEEEWirelessCommunications,Vol.14,No.5,pp.48-55,October2007. [12]Y.Yang,F.Huang,X.Gu,X.Zhang,M.Guizani,andH.H.Chen,“DoubleSenseMultipleAccessforWirelessAdHocNetworks,”ComputerNetworks(Elsevier),vol.51,no.14,pp.3978-3988,October2007. [13]Y.Yang,H.Wu,andH.H.Chen,“SHORT:ShortestHopRoutingTreeforWirelessSensorNetworks,”InternationalJournalofSensorNetworks,vol.2,no.5/6,pp.368-374,July2007. [14]Y.YangandT.S.P.Yum,“AnalysisofPowerRampingSchemesforUTRA-FDDRandomAccessChannel,”IEEETransactionsonWirelessCommunications,vol.4,no.6,pp.2688~2693,Nov.2005. [15]Y.YangandT.S.P.Yum,“MulticodeMultirateCompactAssignmentofOVSFCodesforQoSDifferentiatedTerminals,”IEEETransactionsonVehicularTechnology,vol.54,no.6,pp.2114~2124,Nov.2005. [16]Y.Yang,H.F.Yuan,H.H.Chen,W.B.Yao,andY.H.Song,“TrafficAgentsforImprovingQoSinMixedInfrastructureandAdHocModesWirelessLAN,”EURASIPJournalonWirelessCommunicationsandNetworking,vol.2006,ArticleID94235,7pages,2006. [17]L.P.Wang,Y.Yang,H.H.Chen,Y.H.Song,“OntheVariableCapacityPropertyofCC/DS-CDMASystems,”IEEETransactionsonVehicularTechnology,vol.55,no.3,pp.774-778,May2006. [18]H.H.Chen,Y.C.Yeh,X.Zhang,A.Huang,Y.Yang,J.Li,Y.Xiao,H.R.Sharif,andA.J.HanVinck,“GeneralizedPairwiseComplementaryCodeswithaSet-WiseUniformInterference-FreeWindows,”IEEEJournalonSelectedAreasinCommunications,vol.24,no.1,pp.65~74,Jan.2006. [19]T.Jiang,Y.Yang,andY.H.Song,“ExponentialCompandingTechniqueforPAPRReductioninOFDMSystems,”IEEETransactionsonBroadcasting,vol.51,no.2,pp.244~248,Jun.2005. [20]Y.YangandT.S.P.Yum,“MaximallyFlexibleAssignmentofOrthogonalVariableSpreadingFactorCodesforMulti-RateTraffic,”IEEETransactionsonWirelessCommunications,vol.3,no.3,pp.781-792,May2004. [21]Y.YangandT.S.P.Yum,“AnalysisofRandomAccessChannelinUTRA-TDDonAWGNChannel,”InternationalJournalofCommunicationSystems,vol.17,pp.179-192,Apr.2004. [22]Y.YangandT.S.P.Yum,“DelayDistributionsofSlottedALOHAandCSMA,”IEEETransactionsonCommunications,vol.51,no.11,pp.1846-1857,Nov.2003. RefereedConferencePapers [C1]X.Wang,Y.Yang,W.Zhang,andX.You,“DevelopmentofaMIMO/OFDM-basedGbpsWirelessTestbedforIMT-AdvancedTechnologies,”inProceedingsofTridentcom’10Conference,Shanghai,China,April2011. [C2]G.Yuan,Y.Zhu,Y.Zhang,Y.Yang,W.Wang,Z.Fan,andM.Sooriyabandara,“Multi-UserCooperationforChannelSelectioninCognitiveRadioNetworks:ABayesianApproach,”inProceedingsofIEEEGlobecom’10Conference,Miami,USA,5-10Dec.2010. [C3]Y.Chen,Y.Yang,andI.Darwazeh,“ACross-LayerAnalyticalModelofEnd-to-EndDelayPerformanceforWirelessMulti-hopEnvironments,”inProceedingsofIEEEGlobecom’10Conference,Miami,USA,5-10Dec.2010. [C4]J.Tian,H.Guo,H.Hu,andY.Yang,“OFDMSignalSensingoverDoubly-SelectiveFadingChannels,”inProceedingsofIEEEGlobecom’10Conference,Miami,USA,5-10Dec.2010. [C5]J.M.R.deS.Neto,J.S.daRochaNeto,Y.Yang,andI.A.Glover,“PlausibilityofPracticalLow-CostLocationUsingWSNPath-LossLawInversion,”inProceedingsofIETInternationalConferenceonWirelessSensorNetwork(IET-WSN2010),Beijing,China,15-17Nov.2010. [C6]S.A.Bhatti,I.A.Glover,R.Atkinson,QingshanShan,YangYang,J.M.R.deS.Neto,andJ.S.daRochaNeto,“VulnerabilityofBluetoothtoImpulsiveNoiseinElectricityTransmissionSubstations,”inProceedingsofIETInternationalConferenceonWirelessSensorNetwork(IET-WSN2010),Beijing,China,15-17Nov.2010. [C7]J.Xu,C.Liu,Y.Yang,X.Ge,andT.Chen,“AnOverviewofEnergyEfficiencyAnalyticalModelsinCommunicationsNetworks(Invited),”inProceedingsof2010InternationalConferenceonWirelessCommunicationsandSignalProcessing(WCSP’10),Suzhou,China,21-23Oct.2010. [C8]T.Chen,H.Kim,andY.Yang,“EnergyEfficiencyMetricsforGreenWirelessCommunications(Invited),”inProceedingsof2010InternationalConferenceonWirelessCommunicationsandSignalProcessing(WCSP’10),Suzhou,China,21-23Oct.2010. [C9]S.Sayed,Y.Yang,H.Guo,andH.Hu,“AnalysisofEnergyEfficiencyofaBusyToneBasedCooperativeMACProtocolforMulti-rateWLANs,”inProceedingsofIEEEWCNC’10Conference,Sydney,Australia,18-21April2010. [C10]P.Omiyi,K.Bur,andY.Yang,“DistributedConvergecastSchedulingforReducedInterferenceinWirelessSensorandActuatorNetworks,”inProceedingsofIEEEWCNC’10Conference,Sydney,Australia,18-21April2010. [C11]S.C.Ng,W.Zhang,Y.Yang,andG.Mao,“AnalysisofAccessandConnectivityProbabilitiesinInfrastructure-basedVehicularRelayNetworks,”inProceedingsofIEEEWCNC’10Conference,Sydney,Australia,18-21April2010. [C12]S.Sayed,Y.Yang,andH.Hu,“EnergyEfficiencyAnalysisofCooperativeAccesswithRelay’sDataAlgorithmforMulti-rateWLANs,”inProceedingsofIEEEPersonal,IndoorandMobileRadioCommunicationsSymposium(PIMRC’09),Tokyo,Japan,13-16Sept.2009. [C13]G.Yuan,R.C.Grammenos,Y.Yang,andW.Wang,“SelectiveSpectrumSensingandAccessbasedonTrafficPrediction,”inProceedingsofIEEEPersonal,IndoorandMobileRadioCommunicationsSymposium(PIMRC’09),Tokyo,Japan,13-16Sept.2009. [C14]F.Qin,Y.YangandJ.Mitchell,“IncreaseThroughtheUseofMultipleSub-carriersinWSN,”inProceedingsofACMInternationalSymposiumonMobilityManagementandWirelessAccess(MobiWac’09),Tenerife,CanaryIslands,26-27October,2009. [C15]D.S.Ghataoura,Y.YangandG.Matich,“SWOB:SwarmIntelligentOdourBasedRoutingForGeographicWirelessSensorNetworkApplications,”inProceedingsofIEEEMilitaryCommunicationsConference(MILCOM’09),Boston,USA,18-21October2009. [C16]M.Zuniga,M.Hauswirth,andY.Yang,“StatisticalPropertiesoftheDeliveryRateforSingle-SinkandMultiple-SinkSensorNetworks,”inProceedingsofADHOC-NOW’09,Murcia,September2009. [C17]R.GrammenosandY.Yang,“CyclostationarySignaturesforCognitiveRadioApplicationsandNovelMultipleAccessSystems,”inProceedingsofLondonCommunicationsSymposium(LCS’09),London,UK,3-4Sept.2009. [C18]F.Qin,Y.YangandJ.Mitchell,“PerformanceIncreaseinWSNbytheAdaptationofSpreadingCodeLength,”inProceedingsofLondonCommunicationsSymposium(LCS’09),London,UK,3-4Sept.2009. [C19]D.S.Ghataoura,Y.YangandG.Matich,“QualityofInformationandEfficientDeliveryinMilitarySensorNetworks,”inProceedingsofLondonCommunicationsSymposium(LCS’09),London,UK,3-4Sept.2009. [C20]D.S.Ghataoura,Y.YangandG.Matich,“GAFO:GeneticAdaptiveFuzzyHopSelectionSchemeforWirelessSensorNetworks,”inProceedingsofInternationalWirelessCommunicationandMobileComputingConference(IWCMC’09),Leipzig,Germany,21-24June,2009. [C21]B.Xia,Y.Yang,Z.Fan,andM.Sooriyabandara,“ReinforcementLearningBasedSpectrum-awareRoutinginMulti-hopCognitiveRadioNetworks,”inProceedingsofInternationalConferenceonCognitiveRadioOrientedWirelessNetworksandCommunications(CrownCom’09),Hannover,Germany,21-23Jun.2009. [C22]D.S.Ghataoura,Y.YangandG.Matich,“Channelawarefuzzylogichopselectionforwirelesssensornetworks,”inProceedingsofInternationalConferenceonTelecommunications(ICT’09),pp.113-118,Marrakech,Morocco,25-27May2009. [C23]S.Sayed,Y.Yang,andH.Hu,“ThroughputAnalysisofCooperativeAccessProtocolforMulti-rateWLANs,”inProceedingsofIEEEWirelessCommunicationsandNetworkingConference(WCNC’09),Budapest,Hungary,5-8April2009. [C24]D.S.Ghataoura,Y.Yang,andG.Matich,“ChannelAwareFuzzyLogicHopSelectionforWirelessSensorNetworks,”inProceedingsofIEEEWirelessCommunicationsandNetworkingConference(WCNC’09),Budapest,Hungary,5-8April2009. [C25]J.Chen,S.Olafsson,Y.Yang,andX.Gu,“JointDistributedTransmitPowerControlandDynamicChannelAllocationforScalableWLANs,”inProceedingsofIEEEWirelessCommunicationsandNetworkingConference(WCNC’09),Budapest,Hungary,5-8April2009. [C26]S.Sayed,Y.Yang,andH.Hu,“CARD:CooperativeAccesswithRelay’sDataforMulti-rateWirelessLocalAreaNetworks,”inProceedingsofIEEEInternationalConferenceonCommunications(ICC’09),Dresden,Germany,14-18June2009. [C27]H.Guo,H.Hu,andY.Yang,“CyclostationarySignaturesinOFDM-BasedCognitiveRadioswithCyclicDelayDiversity”,inProceedingsofIEEEInternationalConferenceonCommunications(ICC’09),Dresden,Germany,14-18June2009. [C28]Y.Rui,H.Hu,M.Li,X.Zhang,H.Yi,andY.Yang,“ComparingEffectsofCarrierFrequencyOffsetonGeneralizedMulti-CarrierandOFDMSystems”,inProceedingsofIEEEInternationalConferenceonCommunications(ICC’09),Dresden,Germany,14-18June2009. [C29]C.K.Chau,M.H.Wahab,F.Qin,Y.Wang,andY.Yang,“BatteryRecoveryAwareSensorNetworks,”inProceedingsofInternationalsymposiumonModelingandOptimizationinMobileAdHocandWirelessNetworks(WiOpt’09),Seoul,Korea,23-27June2009. [C30]J.Y.Chen,S.Olafsson,X.GuandY.Yang,“JointoptimisationofthedistributedchannelallocationandpowercontrolinscalablewirelessLANs,”inProceedingsofthe4thIEEEInternationalConferenceonWirelessCommunications,NetworkingandMobileComputing(WiCOM’08),Dalian,China,12-14October2008. [C31]J.Y.Chen,S.Olafsson,X.Gu,andY.Yang,“AFastChannelAllocationSchemeUsingSimulatedAnnealinginScalableWLANs,”inProceedingsofthe5thInternationalConferenceonBroadbandCommunications,Networks,andSystems(Broadnets’08),London,UK,8-11September2008. [C32]S.SayedandY.Yang,“RED:RelaywithExtendedDataforMulti-rateWirelessCooperativeNetworks,”inProceedingsofthe5thInternationalConferenceonBroadbandCommunications,Networks,andSystems(Broadnets’08),London,UK,8-11September2008. [C33]S.SayedandY.Yang,“BTAC:ABusyToneBasedCooperativeMACProtocolforWirelessLocalAreaNetworks,”inProceedingsofthe3rdInternationalConferenceonCommunicationsandNetworkinginChina(Chinacom’08),Hangzhou,China,25-27August2008. [C34]F.Huang,Y.YangandX.Ge,“Cross-LayerAnalysisofReceiverSenseMultipleAccessProtocolinWirelessMeshAccessNetworks,”inProceedingsofthe44thInternationalCommunicationConference(ICC’08),pp.3873-3877,Beijing,China,May2008. [C35]S.Zhou,K.Zhang,Z.Niu,andY.Yang,“QueuingAnalysisonMIMOSystemswithAdaptiveModulationandCoding,”inProceedingsofthe44thIEEEInternationalCommunicationConference(ICC’08),pp.3400-3405,Beijing,China,May2008. [C36]F.HuangandY.Yang,“EnergyEfficientCollisionAvoidanceMACProtocolinWirelessMeshAccessNetworks,”inProceedingsoftheInternationalWirelessCommunicationsandMobileComputingConference(IWCMC’07),Hawaii,USA,12-16August2007. [C37]F.Huang,Y.YangandX.D.Zhang,“ReceiverSenseMultipleAccessProtocolforWirelessMeshAccessNetworks,”inProceedingsofIEEEInternationalCommunicationsConference(ICC’07),pp.3764-3769,Glasgow,UK,24-28June2007. [C38]L.P.Wang,Y.YangandY.H.Song,“Cross-LayerDesignBasedCodeFamilyExtensionforCC/DS-CDMASystems,”inProceedingsofIEEEInternationalCommunicationsConference(ICC’07),pp.5813–5818,Glasgow,UK,24-28June2007. [C39]D.Wu,S.Ci,H.Sharif,andY.Yang,“PacketSizeOptimizationforGoodputEnhancementofMulti-RateWirelessNetworks,”inProceedingsofIEEEWirelessCommunicationsandNetworkingConference(WCNC’07),pp.3575-3580,HongKong,China,11-15March2007. [C40]X.H.Ge,Y.Yang,H.H.Chen,andY.T.Zhu,“Cross-layerThroughputAnalysiswithCaptureEffectinWirelessLocalAreaNetwork,”inProceedingsofIEEEWirelessCommunicationsandNetworkingConference(WCNC’07),pp.4161-4165,HongKong,China,11-15March2007. [C41]F.HuangandY.Yang,“AnEnergyEfficientMediumAccessControlProtocolforWirelessMeshAccessNetworks,”WWRFmeeting17,Heidelberg,Germany,15-17November2006. [C42]J.ChenandY.Yang,“Multi-hopdelayperformanceinwirelessmeshnetworks,”inProceedingsofIEEEGlobecom’06Conference,pp.1-5,SanFrancisco,USA,27Nov.-1Dec.2006. [C43]J.ChenandY.Yang,“TheImpactofDopplerSpreadingonDelayPerformanceoverMulti-hopWirelessCommunications,”inProceedingsofLondonCommunicationsSymposium(LCS’06),London,UK,14-15Sept.2006. [C44]Y.YangandY.Tang,“PerformanceAnalysisofMultibandOFDMUWBSystemsunderWLANInterference,”inProceedingsofSecondInternationalSymposiumonBroadbandCommunications(ISBC’06),MoscowandSt.Petersburg,Russia,10-14Sept.2006. [C45]Y.Yang,H.Wu,andW.Zhuang,“MESTER:MinimumEnergySpanningTreeforEfficientRoutinginWirelessSensorNetworks”,inProceedingsofthe3rdInternationalConferenceonQualityofServiceinHeterogeneousWired/WirelessNetworks(QShine’06),Waterloo,Canada,7-9August2006. [C46]F.Huang,Y.Yang,andH.H.Chen,“DoubleSenseMultipleAccessforWirelessAdHocNetworks”,inProceedingsofthe3rdInternationalConferenceonQualityofServiceinHeterogeneousWired/WirelessNetworks(QShine’06),Waterloo,Canada,7-9August2006. [C47]Y.Yang,H.Wu,andH.H.Chen,“SHORT:ShortestHopRoutingTreeforWirelessSensorNetworks,”inProceedingsofIEEEInternationalCommunicationsConference(ICC’06),pp.3450-3454,Istanbul,Turkey,11-15June2006. [C48]H.H.Chen,J.Li,Y.Yang,X.Du,andH.Liu,“ChallengesandFuturisticPerspectiveofCDMATechnologies:OCC-CDMA/OSfor4GWirelessNetworks,”inProceedingsofIEEEInternationalCommunicationsConference(ICC’06),pp.3984-3989,Istanbul,Turkey,11-15June2006. [C49]Z.Lu,Y.Yang,Y.H.Song,andT.Owens“CharacterizationofRealGPRSTrafficwithAnalyticalTools,”inProceedingsofTheSixthIEEInternationalConferenceon3GandBeyond,London,Nov.2005. [C50]H.F.Yuan,Y.Yang,W.B.Yao,andY.H.Song,“AnalysisofTrafficAgentSchemeforCoverageImprovementinWirelessLocalAreaNetworks,”inProceedingsofthe4thInternationalWorkshoponWirelessInformationSystems,pp.3-12,Miami,USA,May2005. [C51]J.Y.Chen,X.Gu,andY.Yang,“StableDistributedPowerControlwithHighSIRTargetforCellularWirelessCommunicationSystems,”inProceedingsoftheLondonCommunicationsSymposium(LCS’05),London,Sept.2005. [C52]J.Y.Chen,X.GuandY.Yang,“AnImprovedDistributedPowerControlAlgorithmforWirelessSystemswithReducedConstraintonSIR,”inProceedingsofPostgraduateResearchConferenceinElectronics,Photonics,CommunicationsandNetworks,andComputingScience,UniversityofLancaster,30March-1April2005. [C53]F.HuangandY.Yang,“DoubleSenseMultipleAccessforHiddenTerminalAvoidanceinWirelessAdHocNetworks,”postersession,ACMSIGCOMM2004Conference,Portland,USA,Aug.2004. [C54]Y.YangandT.S.P.Yum,“MulticodeMultirateCompactAssignmentofOVSFCodesforQoSDifferentiatedTerminals,”inProceedingsofInternationalConferenceonPersonalWirelessCommunications,Delft,TheNetherlands,Sept.2004. [C55]Z.H.Lu,Y.Yang,andY.H.Song,“SimulationStudyofQoSGuaranteedPacket-SchedulingSchemesforIntegratedUMTSandWLANNetworks,”inProceedingsofGlobalMobileCongress2004,Shanghai,China,Oct.2004. [C56]F.Huang,Y.Yang,X.Gu,andY.H.Song,“ThroughputAnalysisofDoubleSenseMultipleAccessProtocol,”inProceedingsoftheFifthIEEInternationalConferenceon3GMobileCommunicationTechnologies,pp.604~608,London,Oct.2004. [C57]Y.YangandT.S.P.Yum,“AnalysisofPowerRampingSchemesforUTRA-FDDRandomAccessChannel,”inProceedingsofIEEEGlobecom’04Conference,Dallas,Texas,USA,Nov.2004. [C58]Y.YangandT.S.P.Yum,“RearrangeableCompactAssignmentofOrthogonalVariable-Spreading-FactorCodesforMulti-RateTraffic,”inProceedingsofIEEEGlobecom’02,vol.1,pp.824-829,Taipei,Nov.2002. [C59]Y.YangandT.S.P.Yum,“ThroughputAnalysisofRACHinUTRA-TDDonAWGNChannel,”inProceedingsofIEEEVTC’01Fall,vol.2,pp.572-575,AtlanticCity,Oct.2001. [C60]Y.YangandT.S.P.Yum,“NonrearrangeableCompactAssignmentofOrthogonalVariable-Spreading-FactorCodesforMulti-RateTraffic,”inProceedingsofIEEEVTC’01Fall,vol.2,pp.938-942,AtlanticCity,Oct.2001. [C61]Y.Yang,C.F.Ho,X.W.Ding,andT.S.P.Yum,“AnalysisofRandomAccessChannelinUTRA-TDDSystems,”inProceedingsofInternationalConferenceonThirdGenerationWirelessandBeyond,SanFrancisco,May,2001.

推荐链接
down
wechat
bug