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© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Next Generation Core Networks Summit 2011 Standardisation and Developments within SAE Frédéric Firmin 3GPP Technical Officer
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Terminology SAE The 3GPP work item defining… EPC The Evolved Packet Core network The Complete System EPS Evolved radio access technology…but LTE is often used to describe the Complete system – Including Radio LTE And... TAKEAWAY: this presentation covers EPC aspects
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Topics of this presentation Overview of the standardisation work on SAE How is EPC different to current core networks? Standards and releases – Where are we now & where are we heading?
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Overview of the standardisation work on SAE
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February The 3rd Generation Partnership Project Development of an evolved 3G and beyond system: EPS Maintenance and development of GSM, GPRS and EDGE Development of a 3G mobile system based on evolved GSM and UTRA (both FDD and TDD) TAKEAWAY: This is an international effort
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Technical Specification Groups SAE work TAKEAWAY: Work split across TSGs & their Working Groups
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February GPP Evolution SERVICES IP CORE NETWORK RADIO INTERFACES All-IP network Improved security Support of non-3GPP accesses Greater device diversity More IMS applications Greater session continuity Higher data thoughput Lower latency More spectrum flexibility Improved CAPEX and OPEX TAKEAWAY: Whole system approach
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February How is EPC different to current core networks?
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February G/3G architecture domains Circuit core domain 3GPP accesses IMS domain Core network CS networks CS networks PS networks PS networks Packet core domain Access network Voice, SMS… Data Multimedia services External networks 2G / 3G RATs: GSM/GPRS, UMTS, EDGE, HSPA TAKEAWAY: Today both CS and PS in the mix
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February EPS architecture domains Circuit core domain 3GPP accesses IMS domain Core network CS networks CS networks PS networks PS networks Access network External networks 2G / 3G RATs non-3GPP accesses cdma2000© WiMAX WLAN LTE / LTE Advanced … EPC = all-IP network TAKEAWAY: EPC, an all-IP network with support of multiple access technologies Packet core domain
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February An all-IP core network in 2G/3G, the CS domain handles the voice calls and SMS … but in EPC, there is no CS domain anymore! How to provide those services in this all-IP network? Solutions for voice CS fallback IMS: 3GPP MMTel / GSMA VoLTE CS over PS Over the top VoIP Solutions for SMS SMS over SGs interface IMS CS over PS TAKEAWAY: EPC optimized for IMS, but CSFB is covered in the specifications
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Multiple access networks Access networks Non-3GPP accesses 3GPP accesses Trusted Non-trusted GSM/GPRS, EDGE, UMTS, HSPA, LTE… WiMAX, cdma2000© … Public WiFi… Inter-system mobility EPC TAKEAWAY: convergence facilitated by the EPC ; additional security for untrusted accesses
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February QoS in the EPS Voice calls Web browsing Video streaming Other services RADIO RESOURCES UEs CN RESOURCES IP connectivity QoS TAKEAWAY: Diverse range of UE s and Services stretching Resources to the limit
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February QoS in the EPS Different services, different requirements in terms of: Service level: best effort or guaranteed service level Acceptable packet delays and loss rate Different QoS deployment models: User-based differentiation Service-based differentiation Or a combination of user / service-based TAKEAWAY: Differentiation is a key requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Differences between pre-EPS and EPS QoS Pre-EPS QoSEPS Qos 4 traffic classes: conversational, streaming, interactive and background 13 individual QoS parameters: Maximum bitrate, Delivery order, Maximum SDU size, SDU format information, SDU error ratio… 9 QoS Classes Indexes (QCI) map to combinations of: GBR/non-GBR, and predefined values for priority, packet delay budget and acceptable packet loss rate Allocation and Retention Priority 3 priority values Allocation and Retention Priority 15 priority values No always-on bearer after attach Bearer establishment initiated by the network or the UE Always-on IP connectivity Default bearer / dedicated bearer Bearer establishment initiated by the network For more details: see 3GPP TS For more details: see 3GPP TS TAKEAWAY: EPS Qos: simplified, more flexible and efficient
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Standards – Where are we now & where are we heading?
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February GPP RELEASE 3GPP releases PARALLEL STABLE BASE FOR IMPLEMENTORS STABLE BASE FOR IMPLEMENTORS BACKWARD COMPATIBLE BACKWARD COMPATIBLE TAKEAWAY: A release is a consistent set of specifications and features provided within Release freeze
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Building on releases EPS Releases TAKEAWAY: A new 3GPP Release slated every 1-2 years
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Release 8 First release of EPS (LTE and EPC) Frozen since December 2008 SAE core work: High level functions and procedures common for all accesses Evolution of the GPRS core to support LTE access (TS ) Support of non-3GPP accesses (TS ) Inter-system mobility Some features: CS fallback Home NodeB / eNodeB Earthquake and Tsunami Warning System (ETWS) TAKEAWAY: All LTE networks and trials are based on Rel-8 & Rel-9 so far
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Rel-9 Frozen since December 2009 Some features: IMS Emergency Calls over GPRS and EPS Public Warning System (PWS) Enhancements to Home NodeB / eNodeB TAKEAWAY: All LTE networks and trials are based on Rel-8 & Rel-9 so far
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Rel-10 Frozen since March 2011 Some features: Network improvements for M2M (NIMTC) Local IP Access (LIPA) and Selected IP Traffic Offload (SIPTO) IP Flow Mobility and WLAN offload (IFOM) Multi Access PDN Connectivity (MAPCON) On the radio side: First release of LTE-Advanced, which was submitted to ITU-R as a candidate for IMT-Advanced 4G mobile technology TAKEAWAY: This is where we are now
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Rel-11 (future) Service requirements ("stage 1") are still being discussed. They will be frozen in September Architecture (“stage 2”) and protocol design (“stage 3”) will be frozen in March and September 2012 respectively. Some features and studies: Further improvements for M2M Study on Alternatives to E.164 for M2M Simulation of USSD in IMS QoS Control Based on Subscriber Spending Limits Note: Summaries of all releases can be found at: TAKEAWAY: Rel-11 is now the priority
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Conclusions 3GPP LTE & EPC are the major enabler for mobile broadband IMS, a companion to the EPC 3GPP is open and transparent as Members define the content of Rel-11 and further releases
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February Thank You! Frédéric Firmin 3GPP Technical Officer
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