The 3GPP evolution for the 3G mobile system created the new base station system, called Evolved UMTS Terrestrial Radio Access Network (E-UTRAN) and a new core network, called Evolved Packet Core (EPC) as a result of two standardisation projects: Long Term Evolution (LTE) and System Architecture Evolution (SAE). Under these specifications a mobile phone gets access to higher bandwidth with low latency in an improved and more efficient network architecture. The standards define an all-IP network as a base for the E-UTRAN/EPC. The E-UTRAN/EPC does not have a separate PS data traffic and CS voice network, both communicate over the same new Evolved Packet System (EPS) network. LTE/EPS Technology course is an intermediate technical course, which covers all aspects of architecture and functionality of the EPS.
The course is intended for technical GSM/UMTS staff and their management who plan to or already work on introducing LTE/EPS network.
(3GPP mobile network evolution, requirements for the LTE system),
- Network architecture
- EPC - Evolved Packet Core
(MME -Mobility Management Entity, S-GW - Serving Gateway, P-GW - Packet Data Network Gateway, HSS - Home Subscriber Server, EIR - Equipment Identity Register, PCRF - Policy and Charging Rules Function),
(UTRAN and E-UTRAN architecture comparison, evolved Node B - eNB, the need for eNB-eNB X2 interface),
- Architecture for interworking with GERAN/UTRAN
(SGSN - Serving GPRS Support Node, interfaces: S3, S4, S12 and one tunnel option),
- Architecture for roaming
(user traffic routed to the HPLMN, local breakout),
- Architecture for interworking with non-3GPP IP access (WLAN, WiMax)
(trusted and untrusted non-3GPP IP access, ePDG - evolved Packet Data Gateway, AAA - Authentication Authorisation and Accounting),
- Interfaces and protocol stacks
- Geographical network structure
(TA - Tracking Area and TA list registration),
- Identity numbers
(IMSI, MSISDN, IMEI, PDP address, GUTI, S-TMSI, M-TMSI).
- OFDMA and SC-FDMA
(multiple access technologies, FT - Fourier Transform and DFT - Discrete Fourier Transform , orthogonality of frequencies, channel separation in FDMA and OFDM, transmission example, implementation, advantages and disadvantages of OFDM, OFDMA, SC-FDMA),
- Duplex mode
(FDD and TDD),
- Frequency bands
- ICI - Inter-Cell Interference
(ICI randomization, cancellation, co-ordination/avoidance),
- Basic time structures and parameters
(resource grid, resource block, radio frame, reference symbols),
- MIMO - Multiple Input Multiple Output
(multiple antenna systems, reference symbols from multiple antennas, MIMO channels estimation),
(radio, physical, transport, logical channels and their characteristics, UTRAN and E UTRAN channel comparison),
- Transmission process
(link adaptation, HARQ, scheduling).
- LTE-Uu protocol stack
- Core network
- MME in Pool
(pool area, MME selection and addressing, load balancing, overload control),
- Signalling Transport - SIGTRAN
(SCTP, multihoming, streams, stream oriented / message oriented protocol - comparison, security, SIGTRAN in GSM/UMTS / SIGTRAN in EPS - comparison),
- User data transport
(tunneling concept, GPRS Tunneling Protocol - GTP, tunnel establishment),
(3GPP Diameter applications, Proxy/Relay agent),
(EPS default bearer, EPS dedicated bearer, bearer establishment, QoS parameters, exchange of QoS related parameters between EPS and service network).
- Policy Control and Charging - PCC
(PCC in UMTS R5-, R6 and UMTS/EPS R8, Policy Decision Function - PDF, Charging Rules Function - CRF, Policy and Charging Rules Function - PCRF, interaction with services, flow based charging and policy control),
- Traffic Cases
(EMM, ECM and RRC states, attach procedure, TA update, UE/network triggered service request, S1 release procedure, dedicated bearer activation, UE requested bearer resource allocation, handover, intersystem handover, Idle mode Signalling Reduction - ISR),
(EPS Authentication & Key Agreement - EPS-AKA, key hierarchy, ciphering, integrity protection),
- EPS Management
(Self Organising Network - SON, eNB establishment, optimisation of the neighbourhood list, coverage and capacity optimisation, continuous optimisation due to dynamic changes, handover optimisation),
(IMS - IP Multimedia Subsystem, network architecture, identification, QoS, protocols, IMS discovery, registration, security procedures, mobile-to-mobile call, mobile-to-PSTN call, presence service, push-to-talk over cellular, instant messaging, session based messaging, SMS, VCC - Voice Call Continuity, SR-VCC Single Radio Voice Call Continuity),
- CS Fallback and SMSoSGs
(MSC-MME interworking, combined IMSI/EPS Attach, combined LA/TA update, CS call, SMS, other CS services).
The participants should have attended the following courses for better understanding: "UMTS Technology" or "WCDMA Air Interface", or have the equivalent knowledge on UMTS.