E-UTRAN TSG Work Plan

E-UTRAN TSG Work Plan
As mentioned earlier, the E-UTRAN standardization process is still going on. Only some very general
technical aspects have been agreed upon in the TSG RAN meetings, and even for them the subsequent
meetings can revise them from time to time. So far, a detailed work plan of the aforementioned Study
Items has been made by 3GPP and can be summarized in terms of the milestones per TSG RAN meetings. The work plan for SAE is included below by taking into account the time alignment
between the LTE and SAE works.
TSG RAN #28 meeting (June 2005, Quebec)
• Revised Work plan;
• Requirement TR Approved: (1) Deployment Scenarios included; (2) Requirements on Migration
Scenarios included.
TSG RAN #29 meeting (September 2005, Tallin)
Revised Work plan
TSG RAN #30 meeting (December 2005, MT)
• Revised Work plan;
• Physical Layer basics: (1) Multiple access scheme; (2) Macro diversity or not. TSG RAN #31 meeting (March 8–10, 2006, China)
• More detailed L1 concepts to be used for evaluation, such as: (1) MIMO scheme; (2) Intercell
interference mitigation scheme; (3) Scheduling and link adaptation principles; (4) Physical
channel structure (including control signaling, reference signals).
• Simulation conditions and methodology for the system evaluation.
• RF Scenarios.
• Radio Interface Protocol Architecture: Functions of RRC, MAC, and so on.
• RAN Architecture including migration scenarios: (1) Radio interface protocol termination
points: RRC, Outer ARQ termination points, and so on; (2) Security: User-plane and controlplane
ciphering; Control-plane integrity protection.
• Core Network Architecture related to E-UTRA/UTRA/GSM: (1) Control-plane functional termination
points; (2) User-plane functional termination points.
• Overall System Architecture: Nodes and interfaces related to E-UTRA/UTRA/GSM.
• States and state transitions: (1) Final state model; (2) State transition between E-UTRA and
UTRA/GERA.
• Intra E-UTRA and E-UTRA-UTRA/GSM mobility in Active and Idle modes: (1) Mobility
concept including measurements and signaling; (2) Interruption time node and interface budget.
• Service Requirements: (1) Are there any legacy service requirements that are obsolete? Or are
they still very important? (2) Location Services.
• Legal intercept Requirements.
• Revised work plan.
TSG RAN #32 meeting (May 31–June 2, 2006, Poland)
• RAN TR25.912 ready for approval: (1) TR has its level of details at stage 2 and this is necessary
for the smooth transition to Work Item phase; (2) The TR should include performance
assessments, UE capabilities, and system and terminal complexities.
• Mobility between 3GPP and non-3GPP accesses.
• QoS concept.
• MBMS architecture.
• Documentation of overall system migration scenarios.
• Optimal routing and roaming including local breakout.
• Addressing/identification requirements and solutions.
• SA2 TR ready for approval: (1) Containing architecture diagram showing the main functional
entities and interfaces; (2) Signaling flow diagram with delay estimations.
• Work Items created and their time plans agreed.
More information about the upcoming TSG RAN meetings for E-UTRAN architecture is shown
in Figure 10.6.