LTE system signaling procedure ALI GOMRI 1 Contents Overview Elementary Procedures Service signaling flow ALI GOMRI 2 Overview ALI GOMRI 3 System Architecture Overview ALI GOMRI 4 Bearer service architecture A radio bearer transports the packets of an EPS bearer between a UE and an eNB. There is a one-to-one mapping between an EPS bearer and a radio bearer. An S1 bearer transports the packets of an EPS bearer between an eNB and a Serving GW An eNB stores a one-to-one mapping between a radio bearer and an S1 to create the binding between a radio bearer and an S1 bearer in both the uplink and downlink. ALI GOMRI 5 Bearer service architecture ALI GOMRI 6 Service request procedure ALI GOMRI 7 Bearer level QoS ALI GOMRI 8 Bearer level QoS(Cont.) ALI GOMRI 9 Application protocol identities ALI GOMRI 10 Elementary Procedures ALI GOMRI 11 Elementary Procedures Elementary Procures of Uu ALI GOMRI 12 UE STATES ALI GOMRI 13 Signalling radio bearers ALI GOMRI 14 System information ALI GOMRI 15 Paging ALI GOMRI 16 RRC connection establishment ALI GOMRI 17 Initial security activation ALI GOMRI 18 RRC connection reconfiguration ALI GOMRI 19 RRC connection release ALI GOMRI 20 Mobility from E-UTRA ALI GOMRI 21 DL/UL information transfer ALI GOMRI 22 UE capability transfer ALI GOMRI 23 Elementary Procedures Elementary Procures of S1 ALI GOMRI 24 Paging ALI GOMRI 25 Context Management procedures ALI GOMRI 26 SAE Bearer Management procedures ALI GOMRI 27 NAS transport ALI GOMRI 28 S1 Setup ALI GOMRI 29 MME/eNodeB Configuration Update ALI GOMRI 30 Elementary Procedures Elementary Procures of X2 ALI GOMRI 31 Handover Preparation ALI GOMRI 32 SN Status Transfer ALI GOMRI 33 UE Context Release ALI GOMRI 34 Load Indication ALI GOMRI 35 Resource Status Reporting Initiation /Reporting ALI GOMRI 36 X2 Setup ALI GOMRI 37 Service signaling flow ALI GOMRI 38 ALI GOMRI 39 ALI GOMRI 40 ALI GOMRI 41 ALI GOMRI 42 ALI GOMRI 43 ALI GOMRI 44 ALI GOMRI 45 ALI GOMRI 46 ALI GOMRI 47 ALI GOMRI 48 ALI GOMRI 49 ALI GOMRI 50 ALI GOMRI 51 ALI GOMRI 52 ALI GOMRI 53 ALI GOMRI 54 ALI GOMRI 55 ALI GOMRI 56 ALI GOMRI 57 ALI GOMRI 58