3GPP RAN WG1 Chairman Matthew Baker RP-130022 3GPP TSG RAN #59 Vienna, Austria, 26th February – 1st March 2013 Status Report for RAN WG1 to TSG-RAN #59 3GPP RAN WG1 Chairman Matthew Baker

Executive Summary LTE: HSPA : RAN1#72 28 January – 1 February 2013 St Julian’s, Malta EF3 RAN #59 26 February – 1 March 2013 Vienna, Austria LTE: Very good progress on closing Rel-11 corrections Steady start to Rel-12 WIs and SIs HSPA : Rel-11 specifications stable Het net study progressing well Good start to other Rel-12 items Meeting time:

Start of new registration procedure involving signing attendance list Delegates in RAN1 Start of new registration procedure involving signing attendance list

Tdocs submitted to RAN1

E-UTRA Maintenance

E-UTRA CRs No Rel-8/9 CRs; 6 Rel-10 CRs.

E-UTRA CRs Rel-10 Rel-11 36.211: 2 CRs: 36.213: 4 CRs: Clarification of CSI RS mapping to resource elements Correction to CSI Reference Signals 36.213: 4 CRs: Correction on UE procedure for reporting HARQ-ACK Corrections for SRS power scaling in UpPTS Correction on UE-specific RS overhead for deriving CQI when PMI/RI is configured in TM9 CR on UE specific search and Common search space overlap on PDCCH Rel-11 36.211, 36.212, 36.213: Single set of CRs covering corrections to Rel-11 features

E-UTRA Rel-12

New Carrier Type Generally difficult progress PSS/SSS locations: Some aspects are awaiting feedback from RAN4 Other aspects have widely differing views PSS/SSS locations: RAN1 will study further the different alternatives, including studying the benefits of new DMRS patterns on the NCT Study should at least include macro scenario; reduction of DMRS overhead is out of scope of this study. Aim to conclude the study by RAN1#73 Note: NCT should be able to be operated on both macro and small cells. Target speeds are same as were assumed for LTE Rel-8. RRM measurements for NCT RRM measurements need to be supported on both synchronized and unsynchronized NCT Further work awaits feedback from RAN4 Synchronized new carriers No agreements; company contributions submitted to RAN#59 Quasi-co-location: dependent on RAN4 Transmission modes: A TM based on TM10 is supported on NCT MBMS: Working assumption: Subject to feasibility with reasonable complexity, MCH should be supported on NCT for UEs that support MCH reception on SCell RAN2 is asked to study the feasibility and complexity of the relevant RAN2 aspects of supporting MCH on the NCT as an SCell.

Further Downlink MIMO Enhancement Evalution results presented Working Assumptions: A new aperiodic PUSCH feedback mode is supported in Rel.12 with following feedback CQI and rank feedback bit size as in PUSCH Mode 3-1 in Rel 10 A wideband PMI Per subband PMI(s) Use Rel 10 W=W1W2 codebook structure for 4 antenna feedback for DMRS based TMs The following are for further study and evaluation: Subband size Detailed W1 and W2 structures Additional information in the CSI reports for this new feedbsack mode

Further Enhancements to LTE TDD for DL-UL Interference Management and Traffic Adaptation Initial agreement on the scenarios to be supported: At least the multi-cell scenarios that showed feasibility during study item phase should be supported Scenario 1: Multiple Femto cells deployed on the same carrier frequency Scenario 2: Multiple Femto cells deployed on the same carrier frequency and multiple Macro cells deployed on an adjacent carrier frequency where all Macro cells have the same UL-DL configuration and Femto cells can adjust UL-DL configuration Scenario 3: Multiple outdoor Pico cells deployed on the same carrier frequency Scenario 4: Multiple outdoor Pico cells deployed on the same carrier frequency and multiple Macro cells deployed on an adjacent carrier frequency where all Macro cells have the same UL-DL configuration and outdoor Pico cells can adjust UL-DL configuration Take scenarios 3-4 with first priority for further evaluation and design FFS if other scenarios shall be considered in this work item, e.g. multiple operators deploying small cells with eIMTA operations on adjacent channels, co-channel macro-pico case Initial consideration of possible interference mitigation schemes and signalling mechanisms

Study on Provision of Low-cost MTC UEs Identification of which channels need to be considered for 20dB link budget extension: PHICH and PCFICH do not require significant analysis or evaluation PSS/SSS, PBCH (or equivalent), PRACH, (E)PDCCH/PUCCH (maybe), PDSCH/PUSCH need further evaluation Identification of which link level solutions may be relevant for each channel Techniques considered for PSS/SSS, PBCH, PRACH Evaluation assumptions agreed

Study on Small Cell Enhancements – Physical-layer Aspects Scenarios agreed LS to other working groups Note that both RAN1 and RAN2 have considered scenarios for small cell enhancement Agreements on evaluation assumptions Inital consideration of higher-order modulation: LS sent to RAN4 on impairments to be considered Inital consideration of RS and control signalling overhead reduction, and interference avoidance/coordination techniques

Study on 3D-channel model for Elevation Beamforming and FD-MIMO Agreements on scenarios Some initial agreements on assumptions

Study on LTE Device to Device Proximity Services Working assumption: Define general and public safety specific scenarios General scenarios for in NW coverage Applicable for both public safety and non-public safety One additional public safety specific scenario for out of NW coverage and partial NW coverage cases

UTRA Maintenance

UTRA Maintenance TDD Very stable FDD Rels 99 – 10: Rel-11: No CRs Rel-11: 25.211: 1 CR: UE behaviour when non-time reference cell is out of time window 25.214: 2 CRs: Correction of HS-DPCCH power offset for four-branch MIMO Correction to the referenced variable for CELL-FACH enhancement LS to RAN2: A Multiflow capable UE can indicate through a separate RRC-capability bit if it is capable of supporting STTD simultaneously with Multiflow LS to RAN3 on how the non-time-reference cell in multiflow can calculate the HS-DPCCH timing – modification to NBAP suggested. TDD

HSPA Rel-12

HSPA signalling enhancements for more efficient resource usage for LCR TDD Agreements: The number of information bits on HS-SCCH and E-AGCH remains unchanged. The current CCS field on HS-SCCH indicates the channelization code set information for specific timeslot(s). The current CRRI field on E-AGCH indicates the code resource related information for specific timeslot(s). UE reports the capability of whether supporting non-rectangular resource allocation through RRC signaling. RRC signalling of whether the non-rectangular resource allocation is enabled is introduced on a per UE basis. Non-rectangular resource allocation can be enabled for UEs in CELL-DCH state only.

Study on UMTS Heterogeneous Networks Evaluation results for co-channel interference considered Aspects identified for verification for inter-company alignment Initial consideration of potential solutions for interference issues Conclusion: For interference mitigation with range extension, further evaluations should focus on the use of advanced receivers including network assistance and restricted transport formats on specific TTIs. Some updates for TR

Study on DCH Enhancements for UMTS Initial discussion of simulation assumptions and identification of possible enhancements to be studied

Study on Scalable UMTS Primary candidate scenarios to be considered: Stand-alone S-UMTS carrier with reduced bandwidth (½ the legacy carrier bandwidth) Dual-carrier operation with legacy carrier as the primary carrier and one S-UMTS carrier with reduced bandwidth (½ or ¼ of the legacy carrier bandwidth) as the secondary carrier, and with only one uplink (on primary carrier) LS sent to RAN4 and GERAN1 on coexistence aspects Candidate physical layer solutions identified

Chairman’s Award for 3GPP Excellence

Chairman’s Award Presented to Suzuki Hidetoshi (Panasonic) In recognition of exceptional work in RAN1, particularly for invaluable efforts in reaching consensus in aspects of EPDCCH design, with grateful thanks on behalf of all companies in RAN1.

Future RAN WG1 Planning

RAN WG1 Schedule 2013-2014 Tentative Meeting Date Location Host 28 January – 1 February 2013 Malta EF3 RAN#59 26 February – 1 March 2013 Vienna, Austria RAN1#72bis 15 – 19 April 2013 Chicago, USA NAF3 RAN1#73 20 – 24 May 2013 Fukuoka, Japan JF3 RAN#60 11 – 14 June 2013 Aruba RAN1#74 19 – 23 August 2013 Barcelona, Spain RAN#61 3 – 6 September 2013 Porto, Portugal RAN1#74bis 7 – 11 October 2013 Guangzhou, China CATT RAN1#75 11 – 15 November 2013 USA RAN#62 3 – 6 December 2013 Korea RAN1#76 10-14 February 2014 Prague, Czech Republic RAN#63 3 – 6 March 2014 Singapore RAN1#76bis 31 March – 4 April 2014 Shenzhen, China ZTE RAN1#77 19 – 23 May 2014 LGE RAN#64 10 – 13 June 2014 RAN1#78 18 – 22 August 2014 Dresden, Germany RAN#65 9 – 12 September 2014 Edinburgh, UK RAN1#78bis 6 – 10 October 2014 Ljubljana, Slovenia RAN1#79 17 – 21 November 2014 RAN#66 9 – 12 December 2014 US Tentative

Rel-12 WI/SI management: LTE Very good progress made with Rel-11 corrections in RAN1#72 All Rel-12 items received at least the amount of time requested Taking into account expected maintenance work and work for other WGs, RAN1 capacity for Rel-12 work in Q2 2013 is estimated as 21 time units per meeting on average Assumes 4 time units per day Assumes similar usage of parallel sessions as currently, i.e. 2 days with LTE parallel sessions, 3 days with HSPA session in parallel The flexibility to use additional sessions / evening sessions if needed is left to the discretion of the RAN1 leadership In Q1, the sum of time budget requests for approved LTE WIs/SIs was 2 units less than the estimated time available in RAN1#72 Very useful for flexibility to maximise productivity Continue the same principle for subsequent meetings Hence plan for 19 time units per meeting on average for LTE Rel-12 in Q2 2013 5 more units than in RAN1#72 Additional time needed for existing items should be taken into account when considering starting additional items

Rel-12 time budget requests: LTE For already-approved items, 12 extra time units have been requested compared to RAN1#72 Total request: 26 units (deficit of 7 units) Not-yet-approved proposals have requested a further 7.5 units (RAN1#72bis) / 9 units (RAN1#73) Total request including not-yet-approved proposals: 33.5 - 35 units (deficit of 14.5 - 16 units).

Rel-12 WI/SI management: HSPA 11 time units per meeting available for Rel-12 HSPA work In addition to ongoing items, additional work is expected from RAN2-led study on Further EUL Enhancements Total requested time for approved items: 12.5 units Deficit of 1.5 units No spare time for additional HSPA items at present

Concluding remarks RAN1 specs up to and including Rel-10 are very stable Very good resolution of Rel-11 corrections Need to continue to be very disciplined about selecting Rel-12 items for approval, in order to avoid overload Thanks to: Vice chairmen Charlie Zhang and Satoshi Nagata Karri Ranta-Aho and Thomas Salzer for chairing HSPA sessions Patrick Merias for his efficient support LTE Specification Editors Stefan Parkvall, Brian Classon and Bob Love for huge effort on preparing Rel-11 CRs Delegates for active and enthusiastic contributions EF3 for meeting hosting