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agreement or an offer of employment or an alteration in any way of a user’s terms of employment with or within Alcatel-Lucent Copyright © 2013 Alcatel-Lucent All Rights Reserved Copyright © 2015 Alcatel-Lucent All Rights Reserved Welcome to LTE RAN LR 14.3 L 9400 LTE RAN Technical Overview eUTRAN Technical Overview LTE eUTRAN Overview LTE Transport Overview LTE eNodeB Hardware Description Copyright © 2015 Alcatel-Lucent All Rights Reserved LTE RAN LR 14.3 L 9400 LTE RAN Technical Overview Upon completion of this course, you should be able to: Describe functions and the architecture of a LTE Access network Describe the IP transport layer in the radio Access Network Describe the portofolio of the Alcatel-Lucent LTE Radio equipment Describe the eNodeB Operation and Maintenance Principles Your feedback is appreciated! Please feel free to Email your comments to: training.feedback@alcatel-lucent.com Please include the following training reference in your email: TMO18213_V9.0-IG Edition Thank you! Copyright © 2015 Alcatel-Lucent All Rights Reserved Copyright © 2015 Alcatel-Lucent All Rights Reserved TMO18213_V9.0-IG-LR_14.3_L-Ed1 Module 1.1 Edition Section · Module · Page Copyright © 2015 Alcatel-Lucent All Rights Reserved TMO18213_V9.0-IG-LR_14.3_L-Ed1 Module 1.1 Edition Section · Module · Page Page eUTRAN Architecture and Protocols Copyright © 2015 Alcatel-Lucent All Rights Reserved TMO18213_V9.0-IG-LR_14.3_L-Ed1 Module 1.1 Edition Section · Module · Page Copyright © 2015 Alcatel-Lucent All Rights Reserved TMO18213_V9.0-IG-LR_14.3_L-Ed1 Module 1.1 Edition Section · Module · Page The LTE network is an all IP Packet switched (PS) only system, because every standardized interface is based on a protocol stack where L3 is IP The Evolved Packet System provides IP connectivity between a User Equipment (UE) and a Public Land Mobile Network (PLMN) external packet data network This is referred to as Packet Data Network (PDN) Connectivity Service The Evolved UMTS Terrestrial RAN (e-UTRAN) consists of a set of eNodeBs connected to the EPC (MME, SGW, PGW, and PCRF) through the S1 (S1-U for user plan and S1-MME for control plan) eNodeBs can be interconnected through the X2 The e-UTRAN is layered into a Radio Network Layer (RNL) and a Transport Network Layer (TNL) The LTE architecture can be further described as follows: S1-U: This is the reference point between e-UTRAN and the Serving Gateway (SGW) for the per bearer user plane tunneling and inter eNodeB path switching during handover S1-MME: This is the reference point for the control plane protocol between e-UTRAN and MME S11: The interfaces between Mobility Management Entity (MME) and SGW provide control of bearer establishment S5: It provides user plane tunneling and tunnel management between SGW and PDN Gateway (PGW) It is used for SGW relocation due to UE mobility and in case, the SGW needs to connect to a non-collocated PGW for the required PDN connectivity S6a: This interface is defined between MME and HSS for authentication and authorization Gx: It provides transfer of Quality of Service (QoS) policy and charging rules from PCRF to Policy and Charging Enforcement Function (PCEF) in the PGW GMLC (Gateway Mobile Location Center) and E-SMLC (Evolved Serving Mobile Location Center) are used for example in case of emergency call to get the position of the UE CBC (Cell Broadcast Center) is used to forward Warning Message via the MME to the appropriate eNodeB(s) (which may impact a geographical region) and then broadcasted using a paging channel It is a signaling message to notify UE’s in an area (case of earthquake, tsunami, etc.) MBMS GW (Multimedia Broadcast/Multicast service Gateway): MBMS is a broadcast service in which data (multimedia: Film, Video, etc.) is transmitted from a single source entity to multiple recipients (mode Broadcast or Multicast) The signaling messages are sent on the interfaces Sm and M3 (Control plane) M1 is used as user plane Alcatel-Lucent 9981CMS (Certificate Management Server): is in charge of delivering online/offline certificates to activate IPSec tunnel between the Security Gateway (SeGW) and the eNodeB Note: “MME” is the generic 3GPP name for the mobility management function “9471 WMM” is the ALU product name Copyright © 2015 Alcatel-Lucent All Rights Reserved TMO18213_V9.0-IG-LR_14.3_L-Ed1 Module 1.1 Edition Section · Module · Page eNodeB functions: Schedules the user traffic each ms in Downlink (DL) and Uplink (UL) and it takes into account the QoS parameters associated to the data (real time, guaranteed bit rate), Controls the creation, modification and release of the radio bearers (RB), Handles the Radio Resource control (RRC) connection for each UE, Performs an admission control to avoid the acceptance of too many users, Configures the UE measurements on the adjacent cell to manage the mobility by Handover mechanism MME functions: Non Access Stratum (NAS) signaling and NAS signaling security, Inter Core Network node signaling for mobility between 3GPP access networks, Idle mode UE reachability (including control and execution of paging retransmission) and Tracking Area list management (for UE in idle and active mode), PGW and SGW selection, MME selection for handovers with MME change, SGSN selection for handovers to 2G or 3G 3GPP access networks, Roaming, Authentication, Bearer management functions including dedicated bearer establishment PCRF functions : The Policy Control and Charging Rules Function (PCRF) is a functional element that encompasses policy control decision and flow based charging control functionalities SGW functions : Routes and forwards user data packets, while also acting as the mobility anchor for the user plane during inter-handovers, and as the anchor for mobility between LTE and other 3GPP technologies PGW functions : Provides connectivity from the UE to external packet data networks by being the point of exit and entry of traffic for the UE A UE may have simultaneous connectivity with more than one PGW for accessing multiple PDNs The PGW performs policy enforcement, and packet filtering for each user Copyright © 2015 Alcatel-Lucent All Rights Reserved TMO18213_V9.0-IG-LR_14.3_L-Ed1 Module 1.1 Edition Section · Module · Page