LTE信令详析

E HANDOVER_REQUEST_ACKNOWLEDGE SN_STATUS_TRANSFER SN_STATUS_TRANSFER UE_CONTEXT_RELEASE UE_CONTEXT_RELEASE S1AP_PATH_SWITCH_REQ S1AP_PATH_SWITCH_REQ S1AP_PATH_SWITCH_REQ_ACK S1AP_PATH_SWITCH_REQ_ACK RRC 连接建立分配控制信道安全模式 UE能力查询 RRC 连接重配置(信道连接) 事件触发性 X2UUS1UUX2S1 ? NAS RRC MAC PDCP RLC? UE 1.Rrc Connection Request → eNB Msg1 → RAR ← Msg3 → Msg4 ← 2.Rrc Connection Setup ← 3.Rrc plete → 6.DownLinkTransportMsg( Authentication Request )← 7.UpLinkTransportMsg( Authentication Response )→ 10.DownLinkTransportMsg( mand )← 11.UpLinkTranportMsg( plete )→ 14.UECapabilityEnquiry ← 15.UECapabilityInformation → 17.mand ← 18.onnectionReconfiguration ← 19.plete → 20.plete → 22.Attach Accept ← 23.plete → 25.UlInfomationTransport(Detach Request) → 28.DlInformationTransport(Detach Accept) ← 30.onnectionRelease ←