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3GPP2 LTE Workshop SEOUL, Korea, 27 th– 28 th June 2005

3GPP2 LTE Workshop SEOUL, Korea, 27 th– 28 th June 2005. 3GPP LTE Status Source 3GPP TSG RAN Chairman ETSI TC MSG Chairman. 3GPP LTE. History Workshop in Toronto on November 2nd and 3 rd 2004 Identification of requirements Several proposals for radio evolution presented

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3GPP2 LTE Workshop SEOUL, Korea, 27 th– 28 th June 2005

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  1. 3GPP2 LTE WorkshopSEOUL, Korea, 27th– 28th June 2005 3GPP LTE • Status • Source • 3GPP TSG RAN Chairman • ETSI TC MSG Chairman

  2. 3GPP LTE • History • Workshop in Toronto on November 2nd and 3rd 2004 • Identification of requirements • Several proposals for radio evolution presented • 3GPP TSG RAN#26 in December 2004 • Approval of the lsit of requirements • Elaboration of the first time plan • Endorsement of the working methods • 3GPP TSG RAN#28 in March 2004 • First joint working groups meeting held in Tokyo more than 170 delegates • First draft of the Technical Reports on the requirements elaborated • Allowance for the starting of the work in Working Groups

  3. 3GPP LTE • History (continued) • TSG RAN#28 Meeting in Quebec city • Second Joint working group meeting attended by more than 120 delegates • Completion of the Long term Evolution Requirements report • Presentation of the LTE Stage 2 draft report • Reports of the different joint sessions that have taken place • Joint RAN WG2, RAN WG3 TSG SA WG2 on the functional split between the access and the core • First discussions on Layer 1 during the two meetings of TSG RAN WG1

  4. 2005 2006 Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Work Plan for the Long term evolution for the UTRA and UTRAN • RAN #27, 9-11 March, Tokyo • Work plan agreed • TR Structure agreed • 1st list of requirements • RAN#29, 21-23 Sept, Tallin • Revised work plan • RAN-CN functional split agreed • RAN-CN migration scenarios included • RAN#31, 8-10 March, China • Revised work plan • Working assumption on complete concept • Channel structure • MIMO scheme to be used for evaluation • Signalling procedures • Mobility details • RAN#30, 30 Nov-2 Dec, Malta • Revised work plan • RAN Architecture including RAN migration scenarios • Radio Interface Protocol Architecture • States and state transitions • Physical Layer Basics • Multiple access scheme • Macro-diversity or not • RF Scenarios • Measurements • RAN#32, 31 May- 2 June, TBD • Concept TR for approval • TR having Stage 2 level of details in order for smooth transition to Work Item phase • WIs created and their time plan agreed • RAN #28, 1-3 June, Quebec • Revised Work plan • Requirement TR approved • deployment scenarios included • requirements on migration scenarios included

  5. Long Term Evolution Requirements • Reduced cost per bit • Improve spectrum efficiency ( e.g. 2-4 x Rel6) • Reduce cost of backhaul (transmission in UTRAN) • Increased service provisioning – more services at lower cost with better user experience • Focus on delivery of services utilising ”IP” • Reduce setup time and round trip time • Increase the support of QoS for the various types of services (e.g. Voice over IP) • Increase “cell edge bitrate” whilst maintaining same site locations as deployed today • Increase peak bitrate (e.g. above 100Mbps DL and above 50Mbps UL) • Enhance the bitrate for MBMS (e.g. 1-3 Mbps)

  6. Long Term Evolution Requirements • Flexibility of use of existing and new frequency bands • Allow to deploy in wider and smaller bandwidths than 5 MHz ( e.g. ranging from 1.25 to 20MHz) • Allow variable duplex technology within bands as well as between bands • Non-contiguous spectrum allocations to one UE should not be precluded • Should consider FDD/TDD convergence?

  7. Long Term Evolution Requirements • Architecture and mobility • Need to consider UTRAN Evolution and UTRA Evolution at the same time aiming at simplifying the current architecture • Shall provide open interfaces to support Multi-vendor deployments • Consider robustness – no single point of failure • Support multi-RAT with resources controlled from the network • Support of seamless mobility to legacy systems as well as to other emerging systems including inter RAT Handovers and Service based RAT Selection • Maintain appropriate level of security • Allow for reasonable terminal power consumption

  8. LTE Technical consideration • Layer 1 consideration • Several discussion have been conducted regarding OFDM • Majority of the proposal are turning around the use of OFDM for the downlink an several proposals for the uplink including FDM and WCDMA • Also some proposal for multicarrier but with less support • Discussion on parameters for simulation have also started. Several already agreed e.g.technics to be used – QPSK and 16QAM for the different proposals.

  9. LTE Technical consideration • Radio Access Network Architecture • Discussion have already started to review the functional split between the core and the access network to fulfill the requirements and improve the current delay in the access network. • Some work has also started in 3GPP TSG SA WG2 dealing with review of the core network architecture. It was agreed at the last TSG SA meeting not to link the two part meaning that a new LTE will be connected either to the current core or the new core network

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