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3GPP LTE Standards Update

3GPP LTE Standards Update. Adrian Scrase Head of 3GPP Mobile Competence Centre. Outline. Short introduction to 3GPP Evolved RAN Technology path to LTE, Features, work load, spectrum issues Evolved Packet Core Network optimised for IP traffic, Voice over both CS and PS Evolved Services

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3GPP LTE Standards Update

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  1. 3GPP LTE Standards Update Adrian Scrase Head of 3GPP Mobile Competence Centre

  2. Outline • Short introduction to 3GPP • Evolved RAN • Technology path to LTE, Features, work load, spectrum issues • Evolved Packet Core • Network optimised for IP traffic, Voice over both CS and PS • Evolved Services • IMS, Policy Control, Access discovery and selection, Machine Type Communications, Device-to-device communication, Regulatory features • Conclusions

  3. The Role of 3GPP • Maintenance and evolution of Radio Technologies:GSM, GPRS, W-CDMA, UMTS, EDGE, HSPA and LTE • Maintenance and evolution of the related Core Network and Systems Architecture • Partnership Consists of • Regional standards organizations • (Asia, Europe & North America): • Market partners representing the broader industry: NGN Forum (IMS Forum), TD-Forum, GSA, GSMA, IPv6 Forum, UMTS Forum, 4G Americas, TD-SCDMA Industry Alliance, ICU, Femto Forum, CDG, COAI, NGMN Alliance

  4. 3GPP Participation • Over 150 meetings (including Working Groups) per year

  5. Spanning the Generations... GSM 1G Analog technology. Deployed in the 1980s. GSM 2G Digital Technology. First digital systems. Deployed in the 1990s. New services such as SMS and low-rate data. Primary technologies include IS-95 CDMA and GSM. 3G ITU’s IMT-2000 required 144 kbps mobile, 384 kbps pedestrian, 2 Mbps indoors Primary technologies include CDMA2000 1X/EVDO, WiMAX, and UMTS-HSPA. 4G ITU’s IMT-Advanced requirements include ability to operate in up to 40 MHz radio channels and with very high spectral efficiency. No technology meets requirements today. IEEE 802.16m and LTE Advanced being designed to meet requirements. • Radio Interfaces • Higher Data Throughput • Lower Latency • More Spectrum Flexibility • Improved CAPEX and OPEX • IP Core Network • Support of non-3GPP Accesses • Packet Only Support • Improved Security • Greater Device Diversity • Service Layer • More IMS Applications (MBMS, PSS, mobile TV now IMS enabled) • Greater session continuity Text adapted from 3G Americas White Paper, September 2010

  6. 3GPP systems, Building on Releases Release 11 Interworking - 3GPP EPS and fixed BB accesses, M2M, Non voice emergency communications, 8 carrier HSDPA, Uplink MIMO study Release 99: Enhancements to GSM data (EDGE). Majority of deployments today are based on Release 99. Provides support for GSM/EDGE/GPRS/WCDMA radio-access networks. Release 10 LTE-Advanced meeting the requirements set by ITU’s IMT-Advanced project. Also includes quad-carrier operation for HSPA+. Release 4: Multimedia messaging support. First steps toward using IP transport in the core network. Release 9: HSPA and LTE enhancements including HSPA dual-carrier operation in combination with MIMO, EPC enhancements, femtocell support, support for regulatory features such as emergency user-equipment positioning and Commercial Mobile Alert System (CMAS), and evolution of IMS architecture. Release 5: HSDPA. First phase of Internet Protocol Multimedia Subsystem (IMS). Full ability to use IP-based transport instead of just Asynchronous Transfer Mode (ATM) in the core network. Release 8: HSPA Evolution, simultaneous use of MIMO and 64 QAM. Includes dual-carrier HSPA (DC-HSPA) wherein two WCDMA radio channels can be combined for a doubling of throughput performance. Specifies OFDMA-based 3GPP LTE. Defines EPC. Release 6: HSUPA. Enhanced multimedia support through Multimedia Broadcast/Multicast Services (MBMS). Performance specifications for advanced receivers. Wireless Local Area Network (WLAN) integration option. IMS enhancements. Initial VoIP capability. Release 7: Evolved EDGE. Specifies HSPA+, higher order modulation and MIMO. Performance enhancements, improved spectral efficiency, increased capacity, and better resistance to interference. Continuous Packet Connectivity (CPC) enables efficient “always-on” service and enhanced uplink UL VoIP capacity, as well as reductions in call set-up delay for Push-to-Talk Over Cellular (PoC). Radio enhancements to HSPA include 64 Quadrature Amplitude Modulation (QAM) in the downlink DL and 16 QAM in the uplink. Also includes optimization of MBMS capabilities through the multicast/broadcast, single-frequency network (MBSFN) function. Text adapted from 3G Americas White Paper, September 2010

  7. Evolved Radio the IMT family, Key requirements, features and future plans

  8. LTE Release 8 Key Features • High spectral efficiency • OFDM in Downlink • Robust against multipath interference • High affinity to advanced techniques • Frequency domain channel-dependent scheduling • MIMO • DFTS-OFDM(“Single-Carrier FDMA”) in Uplink • Low PAPR • User orthogonality in frequency domain • Multi-antenna application • Very low latency • Short setup time & Short transfer delay • Short HO latency and interruption time • Short TTI • RRC procedure • Simple RRC states • Support of variable bandwidth • 1.4, 3, 5, 10, 15 and 20 MHz

  9. Release 9 LTE Features • Small enhancements from LTE Release 8 mainly for higher layer • HeNB (Home eNode B) • HeNB Access Mode • Rel-8: Closed Access Mode • Rel-9: Open and Hybrid Mode • HeNB Mobility between HeNB and macro • Rel-8: Out-bound HO • Rel-9: in-bound and inter-CSG HO • SON (self-organizing networks) • Rel-8: Self configuration, Basic self-optimization • Rel-9: RACH optimization, etc • MBMS (Multimedia Broadcast Multicast Service) • Rel-8: Radio physical layer specs • Rel-9: Radio higher layer and NW interface specs • LCS (Location Services) • Rel-8: U-Plane solutions • Rel-9: C-Plane solutions, e.g. OTDOA

  10. Key Requirements forLTE-Advanced • LTE-Advanced shall be deployed as an evolution of LTE Release 8 and on new bands. • LTE-Advanced shall be backwards compatible with LTE Release 8 •  Smooth and flexible system migration from Rel-8 LTE to LTE-Advanced LTE-Advanced backward compatibility with LTERel-8 LTE-Advanced contains all features of LTE Rel-8&9 and additional features for further evolution LTE Rel-8cell LTE-Advanced cell LTE-Advanced terminal LTE Rel-8terminal LTE-Advanced terminal LTE Rel-8 terminal An LTE-Advanced terminal can work in an LTE Rel-8 cell An LTE Rel-8 terminal can work in an LTE-Advanced cell

  11. Motivation for LTE-Advanced 1999 2011 Release 99 W-CDMA • 3GPP aligned to ITU-R IMT process • Allows Coordinated approach to WRC • 3GPP Releases evolve to meet: • Future Requirements for IMT • Future operator and end-user requirements Release 4 1.28Mcps TDD Release 5 HSDPA Release 6 HSUPA, MBMS ITU-R M.1457 IMT-2000 Recommendation Release 7 HSPA+ (MIMO, HOM etc.) LTE Release 8 LTE enhancements Release 9 3 Gbps LTE-Advanced Release 10 64QAM ITU-R M.[IMT.RSPEC] IMT-Advanced Recommendation Release 11+ Further LTE enhancements 8x8 MIMO 100MHz BW

  12. 100 MHz f CC Key Features in LTE Release 10 • Support of Wider Bandwidth(Carrier Aggregation) • Use of multiple component carriers(CC) to extend bandwidth up to 100 MHz • Common physical layer parameters between component carrier and LTE Rel-8 carrier • Improvement of peak data rate, backward compatibility with LTE Rel-8 • Advanced MIMO techniques • Extension to up to 8-layer transmission in downlink • Introduction of single-user MIMO up to 4-layer transmission in uplink • Enhancements of multi-user MIMO • Improvement of peak data rate and capacity • Heterogeneous network and eICIC(enhanced Inter-Cell Interference Coordination) • Interference coordination for overlaid deployment of cells with different Tx power • Improvement of cell-edge throughput and coverage • Relay • Type 1 relay supports radio backhaul and creates a separate cell and appear as Rel. 8 LTE eNB to Rel. 8 LTE UEs • Improvement of coverage and flexibility of service area extension • Coordinated Multi-Point transmission and reception (CoMP) • Support of multi-cell transmission and reception • Improvement of cell-edge throughput and coverage

  13. RAN Release 11 Priorities • Short term prioritization for the end of 2011, between RAN#53 and RAN#54 • The next Plenary - RAN#54 (Dec. 2011) – will discuss priorities beyond March 2012

  14. Spectrum Explosion in 3GPP • Recently standardized (Sep. 2011) • UMTS/LTE 3500MHz • Extending 850 MHz Upper Band (814 – 849 MHz) • Spectrum to be standardized by Sep. 2012 • LTE-Advanced Carrier Aggregation of Band 3 and Band 7 • LTE Advanced Carrier Aggregation of Band 4 and Band 17 • LTE Advanced Carrier Aggregation of Band 4 and Band 13 • LTE Advanced Carrier Aggregation of Band 4 and Band 12 • LTE Advanced Carrier Aggregation of Band 5 and Band 12 • LTE Advanced Carrier Aggregation of Band 20 and Band 7 • LTE Advanced Carrier Aggregation Band 2 and Band 17 • LTE Advanced Carrier Aggregation Band 4 and Band 5 • LTE Advanced Carrier Aggregation Band 5 and Band 17 • LTE Advanced Carrier Aggregation in Band 41 • LTE Advanced Carrier Aggregation in Band 38 • LTE Downlink FDD 716-728MHz • LTE E850 - Lower Band for Region 2 (non-US) • LTE for 700 MHz digital dividend • Study on Extending 850MHz • Study on Interference analysis between 800~900 MHz bands • Study on UMTS/LTE in 900 MHz band E-UTRA operating bands in 3GPP TS 36.101

  15. Towards the Evolved Packet Core 3GPP Core Network, Network optimised for IP traffic, Voice over both CS and PS, Future plans, future developments

  16. Architecture Many 3GPP access technologies Mobility between access technologies Multiple roaming models Non-3GPP accesses LTE2600 LTE LTE LTE LTE1800 GSM450 GERAN GSM900 EDGE GSM1900 UTRAN GSM1800 UTRAN UTRAN HSPA UTRAN HSPA+ HRPD 3GPP2 802.16 1xRTT WLAN WIMAX

  17. Operator’s IP Services (e.g., IMS, PSS etc) Operator’s IP Services (e.g., IMS, PSS etc) PSTN Core NetworkEvolution P-GW GGSN Evolved Packet Core Network MSC Circuit/GPRS Core Network SGSN MME S-GW RNC eNode B Node B ‘13 ‘11 ‘09 ‘07 ‘05 ‘03 ‘01 ‘99

  18. Network optimised for IP traffic Dual-stack IPv4/6 connectivity Terminals as well as network can influence the QoS Operators can influence the selection of access by ANDSF Various ways to combine or split traffic off at various points Local IP Access (LIPA) Selective IP Traffic Offloading (SIPTO) WLAN offloading Multiple PDN Connections to Same APN (MUPSAP)

  19. EPCRel-11 and beyond • Multiple accesses • Multiple technologies • Network sharing • National roaming • Deployment related work; • Dealing with multiple configurations, impact of fixed / mobile substitution, LTE speech and multimedia, Femto cell implementation...

  20. Evolved Services IMS, Policy Control, Access discovery and selection, Machine Type Communications, Device-to-device communication, Regulatory features

  21. IMS • Work still ongoing on operational-related aspects • Jointly with the GSM Association on aspects of interconnect, roaming and charging • Local Breakout is utilized for connecting IMS media • Optimized media path is important to reduce cost • Legacy Charging Accounting and Interconnect principles should be re-used • Location requirements being addressed • Authorities in many countries require network-authenticated location information stored for certain sessions (e.g. for court cases) • Standards are being developped to address this

  22. SMS and Messaging over LTE • LTE is packet only and hence does not natively support legacy SMS • IMS based messaging may not be available at initial LTE deployments Standards were developed to deliver legacy SMS over LTE • A device that is attached both to LTE and 2G/3G can send and receive legacy SMS over the legacy CS core network • Enhancements to the necessary interfaces were defined to pass SMS between legacy CS core and EPC/LTE

  23. Policy Control (PCC) The PCC framework allows QoS and Charging control of IP traffic • The PCC framework has been further enhanced to give operators an even wider range of control tools • Support for sponsored data connectivity has been added • Service awareness, deeper lookup of packets is also supported • Handling of privacy policies has been standardized

  24. Access Discovery and Selection (ANDSF) • EPC is a multi-access IP core system supporting both native 3GPP cellular radio technologies and other IP access systems (802.x, etc…) • Legacy selection mechanisms have been available to choose a 3GPP cellular radio and PLMN • Additional standards were developed to take into account non-3GPP access technologies • Access technology policies are uploaded to the device using Device Management procedures • Further work ongoing to fine-tune the granularity of the policies

  25. Machine Type Communications (MTC) • M2M is recognized as a key segment in future packet networks • Initial 3GPP efforts have focused on the ability to differentiate machine-type devices • This allows the operator to selectively handle such devices in overload situations • Low priority indicator has been added to the relevant UE-network procedures • Overload and Congestion control is done on both core network and radio access network based on this indicator

  26. MTC – basic architecture • Work in progress…

  27. Evolution of MTC • Further functionality being added to 3GPP standards in the following areas • Reachability Aspects, MTC Feature control, Device Triggering • Addressing, Identifiers - especially removal of MSISDN dependencies in the architecture • Signaling Optimizations • Small Data Transmissions • MTC Monitoring • …. • MTC is a substantial technical area, full completion will span across multiple future Releases

  28. Device-to-device Communication (D2D) • Proximity-based applications and services represent a recent and enormous social-technological trend • These applications and these services are based on the awareness that two devices or two users are close to each other • Awareness of proximity carries value, and generates demand for an exchange of traffic between them • Direct D2D communication is also essential for public safety services • e.g. in case of lack of network infrastructure in disaster situations • 3GPP has initiated work on enhancing the LTE-EPC platform to support these capabilities

  29. Regulatory features – disaster response • Recent events have brought the different disaster response functions of the 3G/4G networks to the forefront • Public Warning System (PWS) provides a secure framework for delivering Warning Messages to the devices • The Japanese version of this system saved thousands of lives in the recent earthquake/tsunami disaster • Priority Services • Mechanisms have been standardized to allow priority access to the network services (voice calls, Internet, multimedia calls, etc…) for e.g. government officials in the event of a mass disaster

  30. Prospects • 3GPP systems approach ensures evolution to meet new service requirements • Industrial input to 3GPP solid and growing • LTE and LTE-Advanced are not the end, 3GPP is now studying future networks • LTE is an evolution path for non 3GPP systems, providing future path for full coverage

  31. Thank You Adrian Scrase Head of 3GPP MCC adrian.scrase@3gpp.org More Information about 3GPP: www.3gpp.org contact@3gpp.org

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