Device to device communication

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<ul><li><p>New Handoff Management for D2D Communication inLong Term Evolution-Advanced Cellular Network</p><p>Mohammad Dabibi</p><p>University of Tehran</p><p>m.dabibi@ut.ac.ir</p><p>December 12, 2014</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 1 / 34</p></li><li><p>Headline</p><p>1 Introduction to Device To Device CommunicationProximity Discovery and AwarnessClassification of D2D CommunicationCurrent Progress in Standardization</p><p>2 LTE-A Access, Core and Procotol Architecture for D2DD2D Function Block in LTE-A SAE ArchitectureProtocol Stock and Bearer ManagementCommunication SenariosD2D Connection Request/Setup</p><p>3 Handover ThechnologyTarget Cell SelectionX2 Backhauling and Handover Using X2Proposed LTE handover using D2D</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 2 / 34</p></li><li><p>What is D2D?</p><p>Direct Communication Between Nearby Mobiles.</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 3 / 34</p></li><li><p>How To Get Proximity Awareness?</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 4 / 34</p></li><li><p>Discovery And Broadcast</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 5 / 34</p></li><li><p>User Experience</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 6 / 34</p></li><li><p>User Experience Contn</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 7 / 34</p></li><li><p>User Experience Contn</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 8 / 34</p></li><li><p>User Experience Contn</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 9 / 34</p></li><li><p>User Experience Contn</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 10 / 34</p></li><li><p>User Experience Contn</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 11 / 34</p></li><li><p>Classifiation of D2D Communication</p><p> Licensed Band: Better interference avoidance under a controlledenvironment. Ex. Femtocells / Picocells Under LTE-Alicensed band</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 12 / 34</p></li><li><p>Current Progress in D2D Communication</p><p> June 2011: Study item description on the radio aspect of D2Ddescovery and Communication by Qualcomm</p><p> Augest 2011: Direct over-the-air LTE D2D discovery andCommunication</p><p> June 2012: Identified potential requirements between proximate devicesas new step on Rel-12</p><p> December 2012: Study on LTE Proximity Service in radio AccessNetwork ( D2D Discovery - D2D Communication )</p><p> Current Work On: Discovery Signal design, Resource Allocation andScheduling, Synchronization mechanism.</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 13 / 34</p></li><li><p>D2D Function Block in LTE-A SAE Architecture</p><p> ProSe: Proximity Discovery - Direct Communication D2D Sessions: D2D session Could be initiated by sending an initiation</p><p>request to the Proximity Server in MME. Radio Bearer Setup (Ud): MME is responsible for initiating Ud</p><p>interface.</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 14 / 34</p></li><li><p>D2D Function Block in LTE-A SAE Architecture Contn</p><p> Radio Bearer Setup (Ud): MME is responsible for initiating Udinterface + Delivery IP address for D2D terminal devices.</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 15 / 34</p></li><li><p>Protocol Stock and Bearer Management</p><p> Data Protocol Stock for D2D: D2D bearer has been set up betweenpeer devices.</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 16 / 34</p></li><li><p>D2D Design Aspect</p><p> Modulation Format: LTE use SC-FDMA for UL and OFDMA in DL. IfSC-FDMA is used, the D2D UE needs to be equipped with anew SC-FDMA receiver.</p><p> Frame Structure: Camping D2D on UL resources</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 17 / 34</p></li><li><p>D2D Design Aspect Contn</p><p> Channel Measurements: Based on measurement reports</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 18 / 34</p></li><li><p>LTE-A Access, Core and Protocol Architecture for D2D</p><p> D2D Communication Scenarios Direct Communication</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 19 / 34</p></li><li><p>D2D Ennhanced LTE Architecture</p><p> New Interfaces PC1, PC2, PC3, PC4, PC5, PC6 and SGi</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 20 / 34</p></li><li><p>Security Architecture for D2D</p><p> Main Security Feature:</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 21 / 34</p></li><li><p>D2D Connection Request</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 22 / 34</p></li><li><p>Handover Technologies</p><p> Hard Handover break-before-make Soft Handover make-before-break handover procedure: measurements control, the measurements report,</p><p>handover decision, handover execution</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 23 / 34</p></li><li><p>Handover Process ( handover Decision )</p><p>Handover process may betriggered by:</p><p>1 Quality, filed strength ofDistance Values fallbellow/exceed theirthreshold</p><p>2 Periodic Check : PowerBudget HO, Umbrella HO</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 24 / 34</p></li><li><p>Handover Priority</p><p> Handover Priority</p><p>1 Uplink and downlink Interference</p><p>2 Uplink Quality</p><p>3 Downlink Quality</p><p>4 Uplink Level</p><p>5 Downlink Level</p><p>6 Distance</p><p>7 Rapid Field Drop</p><p>8 Slow moving UE</p><p>9 Better Cell, i.e Periodic Check ( power Budget HO or Umbrella HO</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 25 / 34</p></li><li><p>Target Cell Selection</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 26 / 34</p></li><li><p>Handover in LTE-A</p><p> Hard Handover High handover outage probability, Large Delay. Aspect on D2D To Provide Steamless access to Voice and Multimedia</p><p>service with Strict delay in D2D</p><p> Solution 1. Semi-Soft-Handover 2. Handover Using D2DCommunication</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 27 / 34</p></li><li><p>Backhauling X2</p><p> X2 The LTE Radio Access Network moves RNC functionality rothe eNodeB and introduced a new X2</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 28 / 34</p></li><li><p>LTE X2 Handover High Level Flow</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 29 / 34</p></li><li><p>LTE X2 Handover High Level Flow Contn</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 30 / 34</p></li><li><p>Proposed LTE D2D Handover</p><p> Proposed: Handover During D2D Communication via Ud</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 31 / 34</p></li><li><p>Proposed LTE D2D Handover High Level Flow</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 32 / 34</p></li><li><p>References</p><p>T. S. Rappaport</p><p>Wireless communications, Prentice Hall, 1996</p><p>C. Lin, K. Sandrasegaran and S. Reeves</p><p>Handover Algorithm with Joint Processing in LTE-Advanced 2012 IEEE</p><p>J. Chang, Y. Li, Sh. Feng, H. Wang, C. Sun, Ph. Zhang</p><p>A Fractional Soft Handover Scheme for 3GPP LTE-Advanced System, IEEEInternational Conference, 2009.</p><p>M. Anas, F. D.Calabrese, P. E. Mogensen, C. Rosa, K. I. Pedersen</p><p>Performance Evaluation of Received Signal Strength Based Hard Handover forUTRAN LTE, IEEE Vehicular Technology Conference, 2007, pp.1046-1050.</p><p>K. Doppler, M. Rinne, C. Wijting, C. Ribeiro, and K. Hugl</p><p>Deviceto-device communication as an underlay to lte-advanced networks,Communications Magazine, IEEE, vol. 47, no. 12, pp. 4249, 2009.</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 33 / 34</p></li><li><p>The End</p><p>Mohammad Dabibi (University Of Tehran) D2D Handover December 12, 2014 34 / 34</p><p>Introduction to Device To Device CommunicationProximity Discovery and AwarnessClassification of D2D CommunicationCurrent Progress in Standardization</p><p>LTE-A Access, Core and Procotol Architecture for D2DD2D Function Block in LTE-A SAE ArchitectureProtocol Stock and Bearer ManagementCommunication SenariosD2D Connection Request/Setup</p><p>Handover ThechnologyTarget Cell SelectionX2 Backhauling and Handover Using X2Proposed LTE handover using D2D</p></li></ul>

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