E nodeb handover procedure

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Inter eNodeB Handover sequence

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E nodeb handover procedure

  1. 1. eNodeB Handover Procedure Handover between two eNodeB connected to same MME and without S-GW relocation : UE Source eNodeB Target eNodeB DL / UL User data Measurement Control PHY: UL Allocation Measurement Report Handover Preparation Phase Hand Over Request Admission Control Hand Over Request Ack PHY: DL Allocation Forward message to UE RRC Connection Reconfiguration message including mobility Control information MME S-GW
  2. 2. eNodeB Handover Procedure Handover between two eNodeB connected to same MME and without S-GW relocation : UE Source eNodeB Target eNodeB Handover Execution Phase SN Status Transfer DL Data Forwarding Dettach from old Cell and Synchronize to new Cell PHY: UL Allocation RRC Connection Reconfiguration Complete DL Data MME S-GW
  3. 3. eNodeB Handover Procedure Handover between two eNodeB connected to same MME and without S-GW relocation : UE Source eNodeB Target eNodeB MME S-GW P-GW Handover Completion Phase UL Data Switch Path Request Modify Bearer request Modify Bearer request End Marker User data Modify Bearer response Modify Bearer response DL Data Switch Path Acknowledge UE Context Release Request
  4. 4. Thank You • Your suggestions and comments are always welcome. • Please send me your feedback at a_s_sinha@yahoo.com

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