35 commercial networks were launched by end October 2011. End 2008 the specifications were sufficiently stable for commercial implementation and the first commercial LTE network was launched in Sweden and Norway in December 2009.
In 2007, LTE progressed from the feasibility study stage to the first issue of approved technical specifications. Rohde & Schwarz LTE Schwarz LTE Release 9 Technology Introduction 3 Introduction 3ġ Intr Introdu oducti ction on Initiated in 2004, the Long Term Evolution (LTE) project in 3GPP standardization focused on enhancing the Unive Universal rsal Terrestrial Radio Access (UTRA) and optimizing 3GPP’s radio access architecture. 42Īd Additi ditiona onall Info Informa rmation. Mobility Load Balancing Balancing Optimization Optimization. Mobility Robustness Robustness Optimization Optimization. Use Cases for Self Optimization Optimization.38. Use Cases for Self Configuration Configuration. Rohde & Schwarz LTE Schwarz LTE Release 9 Technology Introduction 2 Introduction 2 Self Org Organ anizi izing ng Net Netwo works. Hom Home e eNo eNodeB deB spe specif cifica ication tion (fe (femto mto-ce -cell). Operati Operating ng bands and Band Categor Categories. RF requ requir irem emen ents ts fo forr mu multi lti-c -carr arrie ierr an and d mu mult ltii-RA RAT T ba base se stations statio ns. 28Ĭomm Commerci ercial al Mobile Mobile Alert Alert System System (CMAS) (CMAS). Pub Public lic War Warnin ning g Sy Syste stem m (PW (PWS). Physica Physicall layer details: details. LTE MIM MIMO: O: dua dual-l l-lay ayer er bea beamfo mformi rming. 23Īngle-o Angle-of-Arriva f-Arrivall (AoA) measurement measurement.23. Timing Advance Advance (TDAV), Round Trip Time (RTT). Positio Positioning ning Reference Reference Signals (PRS). Refere Reference nce Signa Signall Time Time D Diffe ifferen rence ce (RSTD) (RSTD) measu measureme rement nt. OTDOA – Observ Observed ed Time Dif Differe ference nce of Ar Arriva rival. Genera Generall aspects of LTE position positioning ing.18. Intr Introduc oduction tion, (Assis (Assistedted-)Gl )Global obal Nav Naviga igation tion Satelli Satellite te Syst Systems ems. Pos Positio itionin ning g meth methods ods in LTE. Physica Physicall layer aspects of evolved MBMS. MBMS in LTE (3GPP (3GPP Rele Release ase 8 and 9). 4Įv evolv olved ed MBM MBMS S (eM (eMBMS BMS). Initial enhancements have been included in 3GPP Release 9 and are described in this white paper. The same way GSM and WCDMA have been enhanced with additional features over time, LTE is continuously worked on. LTE has become the fastest developing mobile system technology. Since then the number of operators implementing the technology is strongly increasing around the globe. The LTE technology as specified within 3GPP Release 8 was first commercially deployed by end 2009. LTE Release 9 Technology Introduction White paperĠ 0.
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