D2D通信材料.pptx

ID:48095537

大小:289.61 KB

页数:9页

时间:2020-01-13

D2D通信材料.pptx_第1页
D2D通信材料.pptx_第2页
D2D通信材料.pptx_第3页
D2D通信材料.pptx_第4页
D2D通信材料.pptx_第5页
资源描述:

《D2D通信材料.pptx》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库

1、Device-to-DeviceCommunicationasanUnderlaytoLTE-AdvancedNetworksDoppler,K.;Rinne,M.;Wijting,C.;Ribeiro,C.;Hugl,K.;IEEECommunicationMagazine,Vol.47,No.12,December2009Speaker:Tsung-HanChiangDate:March9,20121IntroductionTheauthorsoutlineasolutionforaD2Dsessionsetupusin

2、gdedicatedsignalingandautomatichandoverofnetworkroutedtraffictoD2Dlinksbetweennearby(proximity)devices.2SessionSetupbySIP3D2DSessionSetupbyDetectingD2DTrafficThesessionsetuprequiresthefollowingsteps:AsessionisinitiatedbyoneoftheUEunits.ThegatewaydetectsIPtrafficori

3、ginatingfromanddestinedtoUEinthesamesubnetandtobetunneledwithinthesameservingeNBorbetweeneNBsservingneighboringcells.Ifthetrafficfulfillscertaincriteria(e.g.,datarate),thegatewayearmarksthetrafficaspotentialD2Dtraffic.TheeNB(s)requestmeasurementfromtheUEtocheckifD2

4、DcommunicationoffershigherthroughputIfbothUEunitsareD2DcapableandD2DCommunicationoffershigherthroughput,theeNB(s)maysetupaD2Dbearer.EveniftheD2Dconnectionsetupissuccessful,theeNB(s)stillmaintaintheSAEbearerbetweentheUEandthegatewayforcellularcommunications.4D2DSess

5、ionSetupbyDetectingD2DTrafficFurthermore,theeNBmaintainstheradioresourcecontrolforbothcellularandD2Dcommunication.TheUEwillsend/receivepacketsto/fromtheIPaddressofthepeerUEusingtheD2DconnectionwithouttheeNBorSARbeinginvolvedinrouting.5ThedecisiontoestablishaD2Dconn

6、ectioncanbebasedonadefinedpolicysuchaslimitingthenumberofD2Dconnectionstokeeptheinterferencetothecellularnetworkbelowatolerablelevel.AhandoverfromaD2DconnectiontoacellularconnectionisinitiatedwhenthecellularconnectionachieveshigherthroughputthantheD2Dorifoneofthepo

7、liciesforD2Dconnectionsisviolated.6D2DSessionSetupbyDetectingD2DTrafficD2DSessionSetupUsingDedicatedSAESignalingAsessionsetupusingdedicatedSAEsignalingavoidstheoverheadfromdetectingD2DtrafficontheflyfromIPpackets.ThenewaddressformatofD2DSIPcouldsimplybeusername@rea

8、lm.D2D_keyword.7TheauthorsproposetoencapsulatetheSIPinvitemessageinanNAScontrolplanmessage.8D2DSessionSetupUsingDedicatedSAESignalingConclusionTh

当前文档最多预览五页,下载文档查看全文

此文档下载收益归作者所有

当前文档最多预览五页,下载文档查看全文
正文描述:

《D2D通信材料.pptx》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库

1、Device-to-DeviceCommunicationasanUnderlaytoLTE-AdvancedNetworksDoppler,K.;Rinne,M.;Wijting,C.;Ribeiro,C.;Hugl,K.;IEEECommunicationMagazine,Vol.47,No.12,December2009Speaker:Tsung-HanChiangDate:March9,20121IntroductionTheauthorsoutlineasolutionforaD2Dsessionsetupusin

2、gdedicatedsignalingandautomatichandoverofnetworkroutedtraffictoD2Dlinksbetweennearby(proximity)devices.2SessionSetupbySIP3D2DSessionSetupbyDetectingD2DTrafficThesessionsetuprequiresthefollowingsteps:AsessionisinitiatedbyoneoftheUEunits.ThegatewaydetectsIPtrafficori

3、ginatingfromanddestinedtoUEinthesamesubnetandtobetunneledwithinthesameservingeNBorbetweeneNBsservingneighboringcells.Ifthetrafficfulfillscertaincriteria(e.g.,datarate),thegatewayearmarksthetrafficaspotentialD2Dtraffic.TheeNB(s)requestmeasurementfromtheUEtocheckifD2

4、DcommunicationoffershigherthroughputIfbothUEunitsareD2DcapableandD2DCommunicationoffershigherthroughput,theeNB(s)maysetupaD2Dbearer.EveniftheD2Dconnectionsetupissuccessful,theeNB(s)stillmaintaintheSAEbearerbetweentheUEandthegatewayforcellularcommunications.4D2DSess

5、ionSetupbyDetectingD2DTrafficFurthermore,theeNBmaintainstheradioresourcecontrolforbothcellularandD2Dcommunication.TheUEwillsend/receivepacketsto/fromtheIPaddressofthepeerUEusingtheD2DconnectionwithouttheeNBorSARbeinginvolvedinrouting.5ThedecisiontoestablishaD2Dconn

6、ectioncanbebasedonadefinedpolicysuchaslimitingthenumberofD2Dconnectionstokeeptheinterferencetothecellularnetworkbelowatolerablelevel.AhandoverfromaD2DconnectiontoacellularconnectionisinitiatedwhenthecellularconnectionachieveshigherthroughputthantheD2Dorifoneofthepo

7、liciesforD2Dconnectionsisviolated.6D2DSessionSetupbyDetectingD2DTrafficD2DSessionSetupUsingDedicatedSAESignalingAsessionsetupusingdedicatedSAEsignalingavoidstheoverheadfromdetectingD2DtrafficontheflyfromIPpackets.ThenewaddressformatofD2DSIPcouldsimplybeusername@rea

8、lm.D2D_keyword.7TheauthorsproposetoencapsulatetheSIPinvitemessageinanNAScontrolplanmessage.8D2DSessionSetupUsingDedicatedSAESignalingConclusionTh

显示全部收起
温馨提示:
1. 部分包含数学公式或PPT动画的文件,查看预览时可能会显示错乱或异常,文件下载后无此问题,请放心下载。
2. 本文档由用户上传,版权归属用户,天天文库负责整理代发布。如果您对本文档版权有争议请及时联系客服。
3. 下载前请仔细阅读文档内容,确认文档内容符合您的需求后进行下载,若出现内容与标题不符可向本站投诉处理。
4. 下载文档时可能由于网络波动等原因无法下载或下载错误,付费完成后未能成功下载的用户请联系客服处理。
关闭