lte fundamentals anad rf planning

[...]... X2 interface User Equipment  Functionally the UE is a platform for communication applications, which signal with the network for setting up, maintaining and removing the communication links the end user needs  This includes mobility management functions such as handovers and reporting the terminals location, and in these the UE performs as instructed by the network FREQUENCY & BANDWIDTH IN LTE Key... liaison between the UE and the eNB at the time of the inter handover - As a liaison link between the 3GPP LTE technology with the technology (in this case the 2G and 3G)  Gateway Packet Data Network (PDN GW) - Provides for the UE 's relationship to the network packet - Provide a link relationship between LTE technology with technology non 3GPP (WiMAX) and 3GPP2 (CDMA 20001X and EVDO) E-UTRAN (Evolved Universal... Management Entity (MME) – MME is a controller at each node on the LTE access network At UE in idle state (idle mode), MME is responsible for tracking and paging procedure which includes retransmission therein – MME is responsible for selecting SGW (Serving SAE Gateway) which will be used during initial attach EU and the EU time to do intra - LTE handover – Used for bearer control, a different view R99 /... BANDWIDTH IN LTE Key Consideration to Spectrum Selection * Band Selection Source: 3GPP TS 36.101 Illustration for Spectrum Selection Channel Bandwidth Flexibility  LTE provides channel bandwidth flexibility for operation in differently-sized  LTE supports paired and unpaired spectrum on the same hardware spectrum Channel Bandwidth Impact OFDM OFDM vs Single Carrier Spectral efficiency of OFDM compared... Cyclic Prefix OFDMA & SC-FDMA OFDMA vs SCFDMA  Definition  OFDMA is a multiple access technique based on OFDM as the modulation technique It is used for DL transmission in LTE  SC-FDMA is a hybrid UL transmission scheme in LTE which has singlecarrier transmission systems with the long symbol time and flexible frequency allocation of OFDM SC-FDMA Diagram Block SC-FDMA frequency-domain transmit processing... during initial attach EU and the EU time to do intra - LTE handover – Used for bearer control, a different view R99 / 4 which is still controlled by the gateway  Policy and Charging Rules Function (PCRF) In order to handle QoS as well as control rating and charging, and billing EPC Con’t  Home Subscriber Server (HSS) For management and security subscriber, combination AUC and HLR  Serving SAE Gateway . 20112010 2009 20082007 2006 20052004 2003 200220012000 R99 R4 R5 R6 R7 R8 R9 R10 UMTS HSPA DL HSPA UL LTE LTE Adv HSPA + EPC Common IMS IMS MMTel 3GPP Time Line and Evolution LTE Requirement (3GPP TR 25.913) • Peak data rate 100 Mbps. with him. • Architecture simplification , minimization and packet – based interface , full IP LTE Architecture In the LTE network is divided into 2 basic network, namely: 1. E UTRAN (Evolved Universal Terrestrial. Charging Rules Function (PCRF) ( Evolved Universal Terrestrial Radio Access Network)  Mobility Management Entity (MME) – MME is a controller at each node on the LTE access network. At UE in