draft report of 3gpp ran workshop on release 12 and onwards

3GPP RAN Workshop on Release 12 and onwards draftRWS-120052xxxLjubljana, Slovenia, June 11 – 12, 2012

Agenda Item: 3

Source: ETSI MCC

Title: Draft Report of 3GPP RAN Workshop on Release 12 and onwards,

Ljubljana, Slovenia, June 11 – 12, 2012

Document for: Information

Draft Report of 3GPP RAN Workshopon Release 12 and onwards

held in Ljubljana, Slovenia

June 11 – 12, 2012

The present document has been developed within the 3rd Generation Partnership Project (3GPP TM) and it has not been subject to any approval process by the 3GPP Organizational Partners.

colour code:yellow: please ignore, preparations that will be revised laterblue: text that will be revised in the final reportpurple: pendingTdocs

Draft Report of 3GPP RAN Workshop on Release 12 and onwards, Ljubljana, Slovenia, June 13 – 15, 2012

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KeywordsRAN, UTRA, LTE

3GPP

Postal address

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Internethttp://www.3gpp.org

Copyright Notification

No part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.

© 2012, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).All rights reserved.

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Contents

Meeting Organisation..................................................................................................................................4

Executive Summary.....................................................................................................................................4

Backgroung information..............................................................................................................................5

1 Opening of the workshop..................................................................................................................61.1 Reminder for IPR declaration.....................................................................................................................61.2 Agenda........................................................................................................................................................6

2 Presentations on Release 12 and onwards.........................................................................................6

3 Wrap-up of the workshop................................................................................................................16

4 Closing of the workshop.................................................................................................................16

Annex A: List of participants.........................................................................................................17

Annex B: List of Tdocs...................................................................................................................17

Annex C: History.............................................................................................................................17

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Meeting OrganisationMeeting: 3GPP RAN Workshop on Release 12 and onwards

Meeting location: Ljubljana, Slovenia

Registration: http://webapp.etsi.org/MeetingCalendar/MeetingDetails.asp?mid=30078

Duration: Monday 11.06.2012 - Tuesday 12.06.2012

Host: European Friends of 3GPP (EF3)

TSG RAN Chairman**: Takehiro Nakamura (NTT DOCOMO) email: [email protected]

TSG RAN Vice chairman: Marc Grant (AT&T) email: [email protected]

TSG RAN Vice chairman: Han van Bussel (Deutsche Telekom) email: [email protected]

TSG RAN Vice chairman: Hai Tang (China Mobile) email: [email protected]

TSG RAN MCC Support: Joern Krause (ETSI MCC) email: [email protected]

Email reflector: [email protected]

Technical documents: ftp://ftp.3gpp.org/workshop/2012-06-11_12_RAN_REL12/Docs/

**: Chairman of this workshop.

Executive Summary3GPP TSG RAN Workshop on Release 12 and onwards was held in Ljubljana, Slovenia, June 11-12, 2012, hosted by the European Friends of 3GPP (EF3). The workshop had 246xxx participants (see Annex A) and 52xx Technical Documents (see Annex B) including this report.

All 42 company views were presented in about 20min time slots including a 5min questions & answers discussion.At the end of the workshop, TSG RAN chairman Takehiro Nakamura (NTT DOCOMO) summarized in RWS-120045 the main aspects of requirements for REL-12 and onwards:

- Capacity increase to cope with traffic explosion- Energy saving- Cost efficiency- Support for diverse application and traffic types- Higher user experience/data rate- Backhaul enhancement

and potential technologies:

- Enhanced Small Cell for LTE- LTE Multi-Antenna/site technologies- New procedures and functionalities for LTE to support diverse traffic types- as well as:

- Interworking with WiFi- Continuous enhancements for MTC, SON, MDT and advanced receiver- D2D ("device to device")- Further enhancements for HSPA including interworking with LTE

and concluded that 18-24 months of Release 12 timeframe will be proposed from RAN to SA and that some alignment of similar proposals will be needed in order to come to REL-12 study and work items.

- Main topics/decisions:

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ftp://ftp.3gpp.org/workshop/2012-06-11_12_RAN_REL12/Docs/

http://webapp.etsi.org/MeetingCalendar/MeetingDetails.asp?mid=30078


- x

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Backgroung informationAt RAN#54 in Dec. 2011, it was agreed to hold a 3GPP TSG RAN workshop on Release 12 and onwords in Ljubljana in June 11-12, 2012, prior to RAN#56 meeting.

The RAN chairman proposed a scope and agenda of the workshop in RP-120251 at RAN #55 in March 2012.

The scope of the workshop:

The goal of the workshop is to investigate what are the main changes that could be brought forward to evolve RAN toward Release 12 and onward. It is recommended that presentations in the workshop include views on:

- Requirements

- Potential technologies

- Technology roadmap for Releases 12, 13 and after

The discussions from the workshop should be used to define the work plan for Release 12 and onward in TSG-RAN.

3GPP members are invited to provide their presentations in the workshop.

and its agenda were approved in RP-120385 at RAN #55 in March 2012 (also provided in RWS-120001 to the workshop for information).

Further information from the RAN chairman's report to SA #55 in March 2012, taken from SP-120141:

UTRA will not be precluded from the scope

Only 3GPP members will be invited for presentations*: Contributions from more than 30 companies expected.

Single contribution per company group allowed

A company who wants to provide a contribution needs to contact RAN chairman by email before March 7, 2012, 17:00 CET.

We will not split agenda items in requirements/technologies/roadmaps.

Deadline for submission of inputs will be about one week before the workshop (details will be provided later)

*: The underlined part was clarified later by the RAN chairman.

Contributing companies and deadlines for contributions to the workshop were announced via the RAN reflector on 16.03.2012:

All Tdoc authors got an email in which they were asked to provide:

-to the RAN chairman and MCC the title and abstracts before 07.05.2012 17:00 CEST

-the final Tdoc via the RAN reflector before 01.06.2012 17:00 CEST

It was also clarified by the RAN chairman before the workshop:

The timeslot for each document is strictly limited to 20 min. This 20min timeslot includes presentation and Q&A time.

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1 Opening of the workshopAs chairman of the workshop, TSG RAN chairman Mr. Takehiro Nakamura (NTT DOCOMO) opened the meeting on Monday June 11th, 2012 at 09:00am.

On behalf of the host, the European Friends of 3GPP (EF3), Han van Bussel (Deutsche Telekom) welcomed the delegates to Ljubljana, Slovenia and explained organisational issues of the meeting.

1.1 Reminder for IPR declarationThe RAN chairman made the following call for IPRs and reminded the delegates of their obligations with respect to IPRs:

The attention of the delegates to the meeting of this Technical Specification Group is drawn to the fact that 3GPP Individual Members have the obligation under the IPR Policies of their respective Organizational Partners to inform their respective Organizational Partners of Essential IPRs they become aware of.

The delegates are asked to take note that they are thereby invited:

to investigate whether their organization or any other organization owns IPRs which were, or were likely to become Essential in respect of the work of 3GPP.

to notify their respective Organizational Partners of all potential IPRs, e.g., for ETSI, by means of the IPR Statement and the Licensing declaration forms (http://webapp.etsi.org/Ipr/).

1.2 AgendaRWS-120001 Agenda for the RAN workshop on REL-12 and onwards in Ljubljana, Slovenia, 11.06.-12.06.2012

RAN chairman (NTT DOCOMO) AgendaThe agenda was already approved at RAN #55 in RP-120385 and is therefore only provided here for

information.conclusion: noted

2 Presentations on Release 12 and onwardsRWS-120002 Release 12 and beyond for C^4 (Cost, Coverage, Coordination with small cells and Capacity) NSN

Discpresented by Antti Toskala (NSN)

Abstract on Requirements: The drivers for Release 12 and beyond evolution are people with their higher expectations on the service level, new services and applications requiring more performance and the platform of cloud resources and broadband connectivity everywhere.

Abstract on Potential technologies and roadmap: The technical solutions relevant to LTE highlighted in this presented are all related to large cell operation, including 3D-beamforming, LTE multiflow, LTE/HSDPA Carrier Aggregation and further steps with Self Organizing Networks. Additionally items for HSPA Release 12 are covered including HSPA multiflow enhancements.

discussion: LG: slide 6 improved capacity: best channel quality is nowadays selected so what do you have in mind?NSN: cell which is best for UL is not necessarily best for DL, also not just pathloss but also available capacity should be considered

conclusion: noted

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http://webapp.etsi.org/Ipr/


RWS-120003 Views on Rel-12 Ericsson & ST-Ericsson Discpresented by Stefan Parkvall (Ericsson)

Abstract on Potential technologies and roadmap: This contribution presents Ericsson and ST-Ericsson views for Rel-12 on selected topics on LTE and HSPA. The main focus area is LTE enhancements for local area but also other enhancements to LTE, such as M2M and D2D, as well as the evolution of HSPA are addressed.

discussion: Clearwire: how much spectrum do you think is needed in higher frequency bands for local area service?Ericsson: at least 20MHzSamsung: As you proposed macro-assisted operation does soft cell need to be stand-alone?Ericsson: don’t think the soft cell must be stand-aloneFujitsu: also unclear how softcell differs from multiflow from NSNLG: slide 8: 1 EPS bearer mapped to different radio bearers?Ericsson: did not look into this so farconclusion: noted

RWS-120004 LTE evolving towards Local Area in Release 12 and beyond Nokia Corporation Discpresented by Sari Nielsen (Nokia)

Abstract on Requirements: This Tdoc addresses requirements through drivers for LTE evolution in release12 and beyond. The key drivers addressed in the tdoc are e.g. extreme capacity needs with even faster connections, cost and complexity efficiency, efficient spectrum usage, power efficiency and awareness of local services and optimised access.

Abstract on Potential technologies and roadmap: This tdoc focuses on how LTE could be further enhanced for local area deployments and what benefits these enhancements could provide e.g. in terms of increased capacity, throughputs and cost and complexity efficiency. The tdoc also addresses how operator controlled LTE device to device discovery and communication can provide new services and improve social and service awareness in close proximity of the user.

discussion: Samsung: local area slide 8: backward compatibility mode considered or non-backward compatible?Nokia: bothNEC: slide 5: reserved EPC security; any special thing in mind for local area serviceNokia: no special enhancement planned but to make local area workALU: slide 9: direct communication considered to be important?Nokia: discovery needs to be solved first, for certain cases/frequencies it could provide opportunities for itMotorola: device to device not for HSPA?Nokia: evolution is more addressed by LTE, although we would have nothing against HSPA consideration as wellTelecom Italia: inter-operator operation?Nokia: one-operator control consideredKT: any view on copyright problems for device to device?Nokia: we see that operator will decide and limit what is allowed, so operator will have to be able to control this

conclusion: noted

RWS-120005 Views on Release 12 Orange Discpresented by Eric Hardouin (Orange)

Abstract on Requirements: LTE evolutions should enhance the cell and cell-edge spectrum efficiencies, for macro and small cells, in homogeneous and heterogeneous networks. Heterogeneous networks performance should be optimized, also for average-latency backhauls. Better inter-working with WiFi, efficient support of diverse traffic characteristics, energy efficiency and easier network operation are also required.

Abstract on Potential technologies and roadmap: Key evolutions for spectrum efficiency enhancements involve MIMO in the vertical domain enabled by active antennas, powerful advanced receivers and joint transmission/reception optimization.

discussion: ALU: slide 6: LTE-HSPA vs. LTE-Wifi integration difference?Orange: HSPA + Wifi and LTE+Wifi considered herePanasonic: slide 5: 20ms mentioned, can be optimized in design?Fujitsu: interference cancellation: assumption: cells perfectly synchronised and synchronized at UE?

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Orange: yes, this is correct, gains with Comp are not that important/big, residual interference can be processed; although ideal assumptions here, the gains are much bigger than with Comp

conclusion: noted

RWS-120006 Views on Rel-12 and onwards for LTE and UMTS Huawei Technologies, HiSilicon Discpresented by Thomas Sälzer (Huawei)

Abstract on Requirements: Rel-12 and beyond should provide means to efficiently handle increasing capacity needs, in particular for hotspot and indoor deployments. Other general requirements for the system evolution are easier deployment and operation, energy efficiency, support of offloading, as well as the support of new applications and services.

Abstract on Potential technologies and roadmap: Main areas of the technology evolution addressed in this presentation are: Hotspot and Indoor enhancements for LTE, Improved support of HetNets for LTE and UMTS, Support of Active Antenna Systems, Enhanced support of specific services and applications, in particular MTC.

discussion: LG: slide 9: configuration detection, detection of UL/DL configuration or also other parametersHuawei: yes, also carriers for low power modeLG: UE would select a larger band?Huawei: not just monitoring whole bandwidth but single carrier is neededFujitsu: slide 15 positioning: any relation of improved positioning and device to device/ proximity discovery?Huawei: is not just about proximity but also about requirements like in the USQualcomm: slide 7: BS with single antenna in the future? 256QAM?Huawei: rank 2 will be a common case, increasing spectrum efficiency without further increasing number of antennas should be the targetNII: TDD spectrum synchonised with neighbours?Huawei: local clusters should be considered

conclusion: noted

RWS-120007 3GPP RAN Rel-12 & BeyondQualcomm Discpresented by Lorenzo Casaccia (Qualcomm)

Abstract on Potential technologies and roadmap: Data traffic over cellular networks is roughly doubling every year. Over a period of ten years, this will mean that cellular networks have to increase their capacity 1000 times.At the same time, as 3GPP-based platforms become more pervasive, it is also important to increase their functionalities with features that ensure their long-term competitiveness.This presentation will address the above aspects, highlighting some techniques to dramatically increase system capacity in a scalable and cost-effective manner, as well as new functions to increase the 3GPP-based platform's long-term value.Both UMTS and LTE will be covered in the presentation.

discussion: Ericsson: slide 5 table: gains come from picos and not relays?Qualcomm: picos provide a lot of gain but relays also provide some gainEricsson: would have expected a higher gain from relays so is it related to the model?Qualcomm: could be discussed further offlineApple: power consumption in device to device discovery?Qualcomm: here we did not model GPS power consumption

conclusion: noted

RWS-120008 New Solutions for New Mobile Broadband Scenarios Telefonica Discpresented by Kevin Holley (Telefonica)

Abstract on Requirements: From a market perspective there are intense pressures on mobile operators, at the same time there are increased demands from customers.Developments in 3GPP RAN capabilities will therefore need to provide much more adaptability and at a much lower cost.To address these needs, Telefonica believes that the following will need to be addressed:

- rea spectral efficiency increase, to cope with Gbps/Km2 figures - Integration of main non 3GPP RATs, enabling seamless traffic offloading from 3GPP networks- Low cost solution for indoor coverage enhancement- Further enhancements on Intercell Interference in unplanned multilayer HetNet deployments

Abstract on Potential technologies and roadmap:

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- Enhanced SON, as enabler of lowering network deployment and maintenance cost, being a must for unplanned HetNet deployments

- Cognitive Radio techniques, allowing empowerment of multilayer HetNets, highly capable UEs with multi RAT technology, and in general Radio Resource usage awareness.

- Overhead reduction for MTC and bursty traffic

discussion: ZTE: slide 11: share spectrum among opertors?Telefonica: not yet considered the details but it would be good to have this optionFujitsu: high number of small cells, time schedule for UMTS and LTE?Telefonica: will depend on maturity of the considered market (auctions are scheduled differently in different countries)

conclusion: noted

RWS-120009 Telecom Italia requirements on 3GPP evolution Telecom Italia Discpresented by Giovanni Romano (Telecom Italia)

Abstract on Requirements: 3GPP future releases should based on the following requirements: Effectiveness, Avoid Too Many Options, Guarantee Synergy Among 3GPP RATs, Support Technological Evolution. The activity should focus on key features and WI prioritisation to avoid “paper” standards with limited implementations. 3GPP must avoid inserting too many options and focus on “must have” not on “nice to have”. 3GPP Release 12 should focus on LTE evolution and avoid introducing a new radio access technology.

Abstract on Potential technologies and roadmap: Set Release 12 timeplan to ensure still open issues in previous releases to be fixed (starting from Rel. 8). Cloud RAN (centralised processing) and advanced receivers to increase cell edge rates rather than simply address peak rates. Tighten UE performance requirements.

discussion: LG: slide 4: relay, slide 10: 3rd picture you used relay, contradiction?Telecom Italia: relay could interesting but there was no REL-11 activityDish Network: interworking of radios is clear but voice and data relation for LTE?Telecom Italia: interworking not just considered for voice, best network for a given service needs to be considered (e.g. offloading voice from LTE to UTRA for emails)Fujitsu: "different vendors" unclearTelecom Italia: different vendors for a single operator

conclusion: noted

RWS-120010 Requirements, Candidate Solutions & Technology Roadmap for LTE Rel-12 Onward NTT DOCOMO, INC. Discpresented by Satoshi Nagata (NTT DOCOMO)

Abstract on Requirements: Support of further traffic growth, more diverse types of traffic, higher data rates and user-experienced throughput, cost-efficient network deployments with efficient utilization of higher frequency bands, etc.

Abstract on Potential technologies and roadmap: LTE Release 12 onward should integrate technologies for enhanced local area (eLA) with general LTE enhancements. Efficient use of higher frequency band is the key technology direction. Our contribution shows candidate solutions such as advanced transmitter beamforming and receiver cancellation technologies for spectrum efficiency, small cell with new carrier type, "Phantom cell", for efficient use of higher frequency bands, etc.

discussion: ETRI: slide 17: future spectrum extension beyond 10MHz, what would be DOCOMO's favourite spectrum band?NTT DOCOMO: needs further study, not only in 3GPP but also ITUSamsung: phantom cell: physical signalling on U-plane?NTT DOCOMO: can be studied, signalling is data so would be possibleZTE: slide 20: use CA, split UP/CP for femto cell? some new architecture considered?NTT DOCOMO: if we can use current interface that's fine but can studyCMCC: necessity for stand-alone carrier for higher frequencies?NTT DOCOMO: stand-alone ok for small cell but some enhancement can be consideredNSN: massive antenna beamforming at BS and/or UE?NTT DOCOMO: currently would like to consider BS sideALU: phantom cell, UE in can see macro cell; seems to be in contrast to Ericsson proposalNTT DOCOMO: is similar (and prefers "phantom cell" name)Ericsson: does not see a big difference between both

conclusion: noted

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RWS-120011 Where to improve Rel-12 and beyond: Promising technologies NEC Discpresented by Cheng Hock Ng (NEC)

Abstract on Requirements: Mobile Broadband traffic is expected to continue to increase significantly, demanding higher data rates while at least maintaining throughput experienced by the user, as well as flexibility and an easy and cost-efficient operation. This means that the main Rel-10 and Rel-11 requirements remain valid for Rel-12 and beyond, but also that renewed efforts are required at least for distributed and centralized heterogeneous deployment scenarios.

Abstract on Potential technologies and roadmap: NEC has identified the following relevant candidate technologies to satisfy the requirements: "New Carrier Type for Primary Component Carrier", "Vertical and 3D beamforming", "Relay Backhaul Enhancement" and "Enhanced MDT" for Rel-12, "Baseband resource pooling and virtualization" for Rel-13, etc.

discussion: Huawei: MDT slide 11/12: interfreq/RAT interference, does this scenario exist?NEC: see it from GSM to LTE in some cases, depends on operatorZTE: slide 10: what is the difference to current RAN3 discussion?NEC: donor eNB switching does not need to be in mobile relayCMCC: for baseband resource pooling: impact to X2?NEC: in RAN3 specs

conclusion: noted

RWS-120012 Deutsche Telekom Requirements and Candidate Technologies Deutsche Telekom Discpresented by Han van Bussel (Deutsche Telekom)

Abstract on Requirements: Deutsche Telekom sees a need to continue to evolve LTE to maintain its position as the most competitive mobile broadband technology on the market. It is essential that LTE can cater for the fast growing capacity needs in a cost and energy efficient way, where increased deployment of small cells justifies enhancements tailored for these deployments. Capacity enhancements in macro-cellular and heterogeneous networks are also needed. LTE should also continue to be specified for new frequency bands that become available for mobile broadband, and specified for carrier aggregation scenarios for which a market demand exists.

The increased use of MSR BS should be exploited for improved intra-site traffic handling, just as UE support of increased RF can be exploited to introduce e.g. inter-site inter-frequency carrier aggregation.The system furthermore needs to provide support for new business models/services including proximity services (D2D), cloud services and M2M, and be enhanced to continue very efficient support for smartphones. HSPA will be around for another decade mainly on its current deployment bands and thus needs to be kept competitive, especially for interworking with LTE.There is no need to set a very aggressive completion date for Release 12.

discussion: NTT DOCOMO: slide 6: what kind of scenario/used case is assumed?Deutsche Telekom: new carrier types: specified but not yet used spectrum in Europe,. D2D: use case e.g. local advertising, friend finding etc.KT: slide 8: intraband contiguous case: any operator who has more than 20MHz for band 3 in Europe?Deutsche Telekom: not yet, but we would be interestedFujitsu: interest in spectrum sharing?Deutsche Telekom: yes, there is an interest for this, we have joint venture with Orange (not spectrum sharing), not sure whether something needs to be added to the standard as we have already network sharing supportedIII: relation of Wifi and device to device?Deutsche T: Wifi is considered by most of the operators but here we focussed on LTE

conclusion: noted

RWS-120013 Release 12 Prioritization Concepts Dish Networks Discpresented by Mariam Sorond (Dish Networks, former company name DBSD)

Abstract on Requirements: This presentations includes recommendations on requirements that need to be prioritized for operators with LTE deployments for efficient network performance.

Abstract on Potential technologies and roadmap: This presentation recommends technologies and future roadmaps for LTE operators to continue to enhance their networks.

discussion: Telefonica: slide 4: contradiction regarding MBMS/broadcast, interested or not?Dish Networks: 3GPP standards are not complete, would like to see completion of MBMS to address video demand

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KT: slide 6: any use case for UL carrier aggregation?Dish Networks: AWS1 UL band is close, operators with existing AWS spectrum will have no other choice, also in band 3 this might be of interestFujitsu: looking at video, should we take into account the different demands for DL/UL?Dish Networks: so far the main demand is for DL

conclusion: noted

RWS-120014 Towards LTE RAN EvolutionAlcatel-Lucent Discpresented by Said Tatesh (Alcatel-Lucent)

Abstract on Requirements: The context for development of LTE into Release 12 and beyond is an exponential growth of data traffic, changing traffic types, changing consumer behaviour, and new device types. In the light of these trends, the features needed in LTE in the next 3-4 years will be those that increase network capacity, maximize efficiency of spectrum utilisation, improve uniformity of service provision, support personalized data traffic, save energy, provide new revenue opportunities, reduce costs and support newly available spectrum.

Abstract on Potential technologies and roadmap: It should be recognised that LTE already provides a very flexible interface, and a radical revolution is not needed or desirable in the timeframe of Releases 12 and 13. LTE development should focus on evolutions of existing features to satisfy more fully the challenges of the changing traffic patterns. Technology fragmentation should be avoided, to maximize return on investment and economy of scale.Key technology evolutions which should be developed with high priority include:

- MIMO enhancements to support new antenna configurations including smart active arrays and 3D beamforming;- CoMP enhancements for Network MIMO with improved coordination signalling;- Enhanced support for small cells and interference management.

discussion: NSN: slide 12/13: what you mean by suitable CSI?ALU: this is discussed under Comp WINSN: more dense?ALU: can take this offlineLG: slide 14: home eNB extra proxy, we have this in REL-11, any additional feature for REL-12?ALU: want to further study it in REL-12ZTE: slide 17: data fowarding between UEs?ALU: we do not suggest a solution here, D2D could be used for data fowarding but just an example

conclusion: noted

RWS-120015 UE AAS (Active Antenna System) Magnolia BroadbandDiscAbstract on Potential technologies and roadmap: We propose an UE Active Antenna System (AAS) to improve the data throughput and the cell coverage. We will then present an example architecture of the UE AAS and its preliminary performance expectations.

conclusion: revised in RWS-120049 (before presentation)RWS-120049 UE AAS (Active Antenna System) Magnolia BroadbandDisc (LATE)

Note: Tdoc will be presented on Tuesday morning.presented by Haim Harel (Magnolia Broadband)

Note: Technical contents of the presentation changed but abstract text remains unchanged compared to RWS-120015.

Abstract on Potential technologies and roadmap: We propose an UE Active Antenna System (AAS) to improve the data throughput and the cell coverage. We will then present an example architecture of the UE AAS and its preliminary performance expectations.

discussion: Samsung: superposition beamforming gains: some signalling needed for this?Magnolia: algorithm in baseband, for RX no signalling is neededSamsung: anything to standardize for it?Magnolia: at the beginning we thought no but we think now we have to go standards for itBroadcom: more antennas than RF receivers, how do you do channel estimation?Magnolia: of course channel estimation needed, is an estimation process that does not need to be standardized

conclusion: noted

RWS-120016 Requirements and Technical Considerations for RAN Rel.12 & Onwards Fujitsu Limited Discpresented by Tim Moulsley (Fujitsu)

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Abstract on Requirements: Considering further demands on higher system capacity to cope with global exponential mobile data increase, better user experience and efficient accommodation of various traffic types etc., further enhancements on RAN Rel.11 will be required for future releases. In the presentation, our company's views on technical requirements for future radio access systems and technical considerations for RAN Rel.12 onward to fulfill the requirements will be presented.

discussion: NTT DOCOMO: slide 14: LTE-HI?Fujitsu: higher frequency and local areaNTT DOCOMO: fiber considered?Fujitsu: yes, for local areaCMCC: 100MHz complexity when managing every carrier?Fujitsu: better aggregate more than 20MHz componentsALU: where comes capacity expansion by 2016/2017?Fujitsu: 15% with each REL would be good

conclusion: noted

RWS-120017 Operator requirements on future RAN functionalityTeliaSonera Discpresented by Fredrik Florén (TeliaSonera)

Abstract on Requirements:- Solutions for very high traffic (and signalling) scenarios- Challenges with a mix of terminals with different functionality- WiFi integration- Spectral efficiency- SON and MDT

discussion: Vodafone: what is needed to standardize SON in RAN4?TeliaSonera: SON is a vital toolbox but we need to address this question offlineFujitsu: to MTC: concern that low end UE would use higher data rate?TeliaSonera: see impact on efficiency of the network

conclusion: noted

RWS-120018 AT&T View of Release 12 in the North America Marketplace AT&TDiscpresented by Marc Grant (AT&T)

Abstract on Requirements: AT&T considers the rapid pace of the North America market for LTE and the advanced pace of deployments in the rest of the world and provides it views on the need to tie the Release 12 content and timing to the anticipated marketplace needs for advancements in Release 12 after Release 11.

discussion: KDDI: purpose of mesh network?AT&T: better user experienceNTT DOCOMO: slide 10: which services?AT&T: there is so much you can do with applications, increasing the efficiency of the UE by dynamic managementClearwire: aggregating licensed LTE?AT&T: that's a possibilityLG: slide 10: "bundle delay tolerant applications" what you mean by bundling?AT&T: applications which are polling in a certain periodicity

conclusion: noted

RWS-120019 Major drivers, requirements and technology proposals for LTE Rel-12 Onward Panasonic Discpresented by Akihiko Nishio (Panasonic)

Abstract on Requirements: Two major requirements are identified: a) significant data traffic increase especially by smartphones/tablets and b) larger coverage with medium/high data rates for universal user experience especially for video.

Abstract on Potential technologies and roadmap: In order to satisfy the requirements, a combination of dense NW deployment, extension of carrier aggregation and introduction of L1/L2 mobility is proposed. In this context, aspects such as control signalling reduction, energy efficiency and low cost need to be addressed.

discussion: ZTE: virtual cell has no connection? from user or control plane?Panasonic: from user plane, control plane should be covered by macro cellLG: slide 10: title of slide unclear, CA and mobility management relation?Panasonic: mobility measurement is done by macro cell/lower frequency carrier

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LG: CA in connected mode and mobility management is done in idle modeZTE: slide 17: "efficient data communication" aspect unclearPanasonic: is one means to efficiently support MTC devices

conclusion: noted

RWS-120020 Efficient spectrum resource usage for next-generation N/W SK Telecom Discpresented by Haesung Park (SK Telecom)

Abstract on Requirements: Data traffic explosion will be more severe in near-future, which results in decoupling between revenue and data traffic. Korean government has announced “Mobile Broadband Plan” to manage this trend. However, there will be still insufficient spectrum to deal with data burst. Therefore, operators will need how to efficiently use the limited spectrum.

discussion: KT: slide 10: symmetric deployment: considering asymmetric deployment here?SK Telecom: cannot confirm this (confidential)NTT DOCOMO: slide 12: which band is considered here for massive MIMO? 3.5GHz?SK Telecom: possible to have AAA with 3.5GHzFujitsu: 6 times spectrum efficiency improvement seems very optimisticIII: slide 11: LTE/Wifi only scenario?SK Telecom: we have demonstrated already a hybrid usage of LTE/WifiZTE: slide 10 cognitive radio: how can you guarantee QoS?SK Telecom: QoS guranteed using licensed band

conclusion: noted

RWS-120021 Technologies for Rel-12 and onwards Samsung ElectronicsDisc (LATE)Abstract on Requirements: 3GPP RAN technologies should continue evolution to accommodate drastic traffic increase as well as for efficient support of diverse applications and device types.

Abstract on Potential technologies and roadmap: Potential technologies for Rel-12 and onwards include further evolution of MIMO technologies to improve the network capacity (not the peak rate), enhanced support of small cell operation, and enhanced handling of the control plane overhead. Further evolution of the features introduced in Rel-10/11 and the features from Rel-11 feasibility studies are also discussed for inclusion in Rel-12.

conclusion: revised in RWS-120046 (before presentation)

RWS-120046 Technologies for Rel-12 and onwards Samsung ElectronicsDisc (LATE)presented by Juho Lee (Samsung)

Note: Technical contents of the presentation and abstract text remain unchanged compared to RWS-120021.

Abstract on Requirements: 3GPP RAN technologies should continue evolution to accommodate drastic traffic increase as well as for efficient support of diverse applications and device types.

Abstract on Potential technologies and roadmap: Potential technologies for Rel-12 and onwards include further evolution of MIMO technologies to improve the network capacity (not the peak rate), enhanced support of small cell operation, and enhanced handling of the control plane overhead. Further evolution of the features introduced in Rel-10/11 and the features from Rel-11 feasibility studies are also discussed for inclusion in Rel-12.

discussion: NSN: top technologies?Samsung: FD-MIMOLG: slide 19: serving and drift Node B, difference?Samsung: serving Node B for mobility, drift Node B for throughput boostNokia: FD-MIMO: how many antennas should be feasible?Samsung: 64 antennas should be possibleNokia: but 1 of the 64 would mean several antennas already

conclusion: noted

RWS-120022 LTE Rel-12 and Beyond Renesas Mobile Europe Discpresented by Asbjorn Grovlen (Renesas)

Abstract on Potential technologies and roadmap: Local area deployments will play a key role in meeting the increasing capacity demand in mobile networks. In the presentation we go through the building blocks that should be introduced in order to optimize the local area performance, including the physical layer aspects of device-to-device discovery and communications. Additionally, evolution of existing LTE functionality is proposed.

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discussion: Fujitsu: last slide: how might 3GPP achieve this goal?Renesas: what is important is that features can be testedPanasonic: slide 5: purpose of new carrier type with standard operation?Renesas: lower overhead, ePDCCH gives more flexibilityFujitsu: changing numerology with new carrier type?Renesas: depends on how agressive we want to be in REL-12ALU: what does this mean?Renesas: for local area you could optimize the numerology to reduce overheadTelecom Italia: slide 8: LTE impact from public safety?Renesas: e.g. D2D range requirements would be tougherNII: 3.5GHz offload needs availability in chipsets so when would this be?Renesas: cannot give a guarantee but having it as a global band would help

conclusion: noted

RWS-120023 LTE Rel-12 and Beyond: Requirements and Technology Components Intel Discpresented by Mo-han Fong (Intel)

Abstract on Requirements: We see two important aspects on the requirements for Rel-12 and beyond. One aspect is to continue to improve spectral efficiency and data offloading efficiency to meet the explosive traffic demand, in particular, for uneven traffic loading in local/hotspot areas.The second aspect is how to best use the available radio resource in order to support a wide range of data applications and new use cases; to improve end-user experience or QoE; and to have an optimum trade-off between network efficiency and UE power efficiency.

Abstract on Potential technologies and roadmap: In this contribution, we propose candidate technology components to meet the Rel-12 and beyond requirements we have outlined. The proposed candidate technology components include: HetNet enhancements to flexibly adapt to traffic concentration and to address mobility issues; further CoMP enhancements; LTE-WLAN interworking to improve offloading efficiency; opportunistic use of unlicensed spectrum for D2D communication; further RAN enhancements to support diverse data applications including MTC; and RAN techniques to improve end-user QoE.

discussion: NTT DOCOMO: benefit of new carrier type in REL-12?Intel: new carrier type should be defined already in REL-11 to avoid compatibility problemsLG slide 14: definition of MTC device?Intel: SA only defined "delay-tolerant" device so far but further discussion ongoing

conclusion: noted

RWS-120024 Considerations on further enhancement and evolution of UMTS/LTE network in R12 and onwardsChina Unicom Disc

presented by Zhangchao Ma (China Unicom)Abstract on Requirements: Rapid development of mobile internet will forge brand new mobile traffic trends, including prevalence of proximity-based service, flourish of user-generated contents and more diversified mobile applications. Internet-oriented, inter-connected and intelligent radio network(I-Net)is expect for the next version of mobile network in order to survive in the future ubiquitous mobile communication environment. Moreover, the R12 and onwards RAN is expected to be enhanced in several other aspects including more flexible usage of frequency resource, more efficient mechanism to handle the smart phone and MTC service impacts, further optimization for the widely deployed UMTS networks and better coordination between HSPA and LTE.

Abstract on Potential technologies and roadmap:- Mobile network architecture evolution enabling efficient local service provision with telecom-level control and

management capability- Enhancement of FDD system to support asymmetric uplink and downlink frequency bandwidth- RRM enhancement to support diverse packet services- Improved inter-working mechanisms between UMTS and LTE networks- Network-assistant mechanisms to facilitate application of dual-mode dual-pass/standby terminal

discussion: Dish Networks: slide 8/9: advantage of flexible spectrum utilization compared to CA?China Unicom: is just an alternative possibilityFujitsu: slide 9: scenario 2: asymmetric bandwidth assumed, duplex distance is variable?China Unicom: will take it offline

conclusion: noted

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RWS-120025 Views on LTE R12 and Beyond CATT Discpresented by Zukang Shen (CATT)

Abstract on Requirements: Observing the ever increasing demand on data rate and spectral efficiency, as well as the challenges of scarce spectrum, green ICT, complicated deployment scenario, this presentation gives our views on the requirements of future wireless mobile communication systems. In particular, the requirements of an LTE Hotspot and indoor (LTE-Hi) system are given, focusing on enhanced throughput, spectral efficiency, and UE experience in small coverage areas. LTE-Hi is envisioned as the key evolution of wireless mobile communication toward mobile broadband in the future.

Abstract on Potential technologies and roadmap: Based on the envisioned requirements, this presentation provides our views on the potential technologies and roadmap of future mobile wireless communication systems. The proposed technologies include a set of topics which are natural continuations of LTE and LTE-Advanced, e.g. in the area of multiple antennas, mobile relay, machine type communications. A set of technologies pertaining to LTE-Hi, e.g. flexible TDD UL-DL configuration and interference mitigation, are presented, where LTE-Hi is expected to provide higher performance at higher frequency band for small coverage areas.

discussion: Texas Instruments: slide 21: wonders how it reduces receiver complexity and reference signal overhead

conclusion: noted

RWS-120026 A proposal for potential technologies for Release 12 and onwards ETRI Discpresented by Taegyun Noh (ETRI)

Abstract on Potential technologies and roadmap: The potential technologies can be divided into two categories: one for short-term evolution by extending some of the ongoing Work Items and Study Items and the other one for long-term evolution by introducing new radio technologies such as D2D and very large-scale MIMO. We would like to discuss the prospects and benefits of the technologies, in terms of the future evolution of LTE, focusing on the following items:

- New carrier-type enhancements- CoMP enhancements- Support of machine-type communications- Device-to-Device communications- MIMO with a very large number of Tx antennas"

discussion: Telecom Italia: slide 8: UE controlled direct communication: lawful interception and data security possible?ETRI: agrees that these issues need to be handled by the network, network will control D2DCEWiT: operator should know the location of subscriber all the time, how can this be done?Fujitsu: slide 7: what sort of application?

conclusion: noted

RWS-120027 A view on requirements on Rel-12 and onwards from an operator's viewpoint Softbank Mobile DiscAbstract on Requirements: This contribution presents a view on requirements on Rel-12 and onwards from an operator's veiwpoints. In the presentation, as a requirement, we discuss the importance of deployment flexibility, focusing on CoMP.

Abstract on Potential technologies and roadmap: Currently 3GPP considers CoMP technology focusing on fiber optics scenario. However, operators see that in a practical deployment, other deployment scenarios also need to be considered. The presentation identifies issues of CoMP deployment from operators viewpoint and shows, as an example, a potential technology to solve the issues, including dynamic CoMP coordination over X2 interface, for further discussion in future 3GPP meetings.

conclusion: revised in RWS-120048 (before presentation of RWS-120027), title, technical contents and abstract changed

RWS-120048 A view on Rel-12 and onwards from an operator's viewpoint Softbank Mobile Discpresened by Hitoshi Yoshino (Softbank Mobile)

Abstract on Requirements: This contribution presents a view on Rel-12 and onwards from an operator's viewpoints. In the presentation, as a requirement, we discuss the importance of deployment flexibility, focusing on CoMP.

Abstract on Potential technologies and roadmap: Currently 3GPP considers CoMP technology focusing on fiber optics scenario. However, operators see that in a practical deployment, other deployment scenarios also need to be considered. The presentation identifies issues of CoMP deployment from operators viewpoint and shows, as an

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example, a potential technology to solve the issues, including dynamic CoMP coordination over X2 interface, for further discussion in future 3GPP meetings.

discussion: Renesas: X2 interface for COMP for multi-vendor deployments: do we need to specify what schedulers are doing?Softbank: easy deployment is more important than multivendor deployment aspectSamsung: slow or static DPS intended in first phase?Softbank: DPS is easier to modify/implement than JT, so lighter scheme over X2 should be considered in first phase

conclusion: noted

RWS-120028 India market Requirements for Rel. 12 and beyond CEWiT Discpresented by Nadeem Akhtar (CEWiT)

Abstract on Requirements: LTE will be the primary means of broadband access in India, covering extremely dense urban areas, dense suburban areas and large, sparsely-populated rural areas. LTE deployment in India will be single-carrier, reuse-1 using LTE-TDD in 2.3 GHz band and LTE-FDD in 700 MHz. Future evolution of LTE must address the following requirements:

1. Inter-operator co-existence with closely spaced carriers and flexible UL:DL ratios2. Large-scale and relatively unplanned and adhoc deployment of Hetnets3. RAN-sharing, particularly for in-building solutions4. Energy-saving for RAN and EPC

discussion: KT: slide 5: 2.5MHz gap, if not synchronized you will have severe interferenceCEWiT: if they would be some signalling between those operators that could workQualcomm: same slide: interoperator intra-carrier interference, what is this?CEWiT: is a case of spectrum sharingIII: slide 8: relay based wireless backhaul enhancements: scenario?CEWiT: most users indoor with concrete walls i.e. high penetration loss, so this is a way of backhaulRAN chairman: slide 5: non-synchronized situation seems to be serious, performance will be very much degradedCEWiT: deployment has just started

conclusion: noted

RWS-120029 Views on LTE Rel-12 & Beyond CMCC Discpresented by Hai Tang (CMCC)

Abstract on Requirements: Explosive growth of mobile data traffic and imbalances between new requirements and existing network capabilities demand faster and more powerful networks, together with innovations for deployment and operation.

Abstract on Potential technologies and roadmap: LTE evolution for Hotspot and Indoor to solve data explosion;Technologies including 3D-MIMO, HetNet/CoMP/Relay related enhancements, MDT/SON enhancements for a flexible and powerful network; Possible coordination With WiFi for data offloading; New spectrum/CA combinations.

discussion: NTT DOCOMO: slide 16: what kind of multiple access enhancement do you consider?CMCC: OFDMA for UL would be an optionNTT DOCOMO: difference REL-11 and 1X carrier type?CMCC: can be totally newHitachi: very good LTE for hotspot why coordination with WiFi needed?CMCC: is a step by step approachSamsung: slide 18: 3D MIMO: what kind of schemes are considered?CMCC: not yet a specific scheme in mind, is part of a SIDish Networks: slide 3: mobile data growth declining in China?CMCC: maybe related to saturation of GSMALU: slide 12: what sort of multiple access technology is considered?CMCC: OFDM for ULSprint: D2D deployment plans in China?CMCC: no plans so farFujitsu: TDD: same problem UL/DL synchronisation in China as in India?CMCC: we assume synchronisation

conclusion: noted

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RWS-120030 LTE addressing the needs of the Public Safety Community IPWireless Discpresented by Phil Young (IPWireless)

Abstract on Requirements: In Rel-12+ 3GPP RAN should consider the needs of the public safety community who are looking towards LTE as the solution of choice for next generation public safety networks. The first priority for the public safety community is the provision of Mission Critical Voice communications, therefore, 3GPP RAN should consider and address the relevant aspects of the following MCV requirements: device-to-device communications, group communications, push-to-talk and emergency alerting. In addition to MCV the public safety community will also require access to various multimedia content: e.g. text, pictures, video-clips and real-time streaming video.

discussion: Telefonica: slide 13: OMA PoC: some changes were made in 3GPP to make PoC working better, so what do you mean by "natively"?IPW: some people consider to add push to talk/PoC natively in LTE, OMA PoC could be considered as one solution; but we have to take into account also the special requirements for public safetyALU: differences between European and US public safety system requirementsIPW: of course spectrum differences, definition of requirements led by US but they should be broadly the sameDish Networks: why do we need to optimize broadband for mission critical voice?IPW: for some time public safety authorities will rely on their narrow band system for voice but they consider LTE as future opportunity to overcome interoperability issues and maintenance costs

conclusion: noted

RWS-120031 Vodafone view on 3GPP RAN Release 12 and beyond Vodafone Discpresented by Tim Frost (Vodafone)

Abstract on Requirements: This presentation provides Vodafone's view on what is required within LTE/HSPA Release 12 and beyond. In particular, significant improvements in baseline user experience are needed for HSPA and LTE, whilst ensuring LTE is a competitive solution for a range of applications and device types.

Abstract on Potential technologies and roadmap: Three important focus areas are:- enhancements for wireless backhaul for small cells- ensuring a competitive LTE solution for low rate M2M applications- improvements to allow smart/controlled usage of unlicensed spectrum

discussion: LG: slide 7: regarding LTE low cost voice: for MTC or low cost UE? Using existing voice or new standard intended?Vodafone: not yet clear whether we want to push it, using existing architecture intended, need to study where cost reduction could be achieved, so is not for MTC

conclusion: noted

RWS-120032 An Operator’s View of Release 12 and Beyond Sprint Discpresented by Scott Migaldi (Sprint)

Abstract on Requirements: Release 12 will represent the first release since LTE began widespread commercial deployments. Features that are needed in release 12 should reflect not only new requirements such as enhancements to capacity, data stream aggregation, additional MIMO enhancements, HetNet, and advanced antenna systems. But it should also focus on any bug fixes that have been discovered in the field. Release 12 should also take the time necessary to complete these features and fixes in order for operators to utilize and integrate them into existing systems in an appropriate time line.

Abstract on Potential technologies and roadmap: Going on beyond release 12 the most important issue facing the global ecosystem is the acquisition of suitable spectrum and ways to take advantage of an ever-increasing fragmentation of spectrum. The second issue that would need to be addressed is the ways in which the user community will need to interact with information in an environment where on-demand high speed mobile data has become a reality. That will mean some significant changes in the way that user interfaces to information are designed and higher layer features are developed. The Internet model as we know it today may not be what best serves the users of high-speed mobile data.

discussion: ETRI: slide 12: 5G: seems 10 years needed to standardize a generation, question more to RAN chairman: when do we plan 5G?Sprint: not necessarily always exactly 10 years, we would like to see 3GPP to continue work with ITU in the direction of future generationsRAN chairman: workshop is also beyond REL-12 nevertheless it is too early to consider 5G discussion now, we should more focus here on REL-12 and REL-13

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MediaTek: slide 13: reason for congestion after 2015?Sprint: we were running some simulations, main reasons: growing populations, limitations of carriers, no estate to add more base stations (not cost efficient); our main bands are 25, 26 and 41; scenario may vary a bit from operator from operatorIII: slide 8: D2D for public safety, D2D also on commercial side?Sprint: on commercial side we have problems to come up with a business case and see some regulatory challenges, so probably not yet ready to consider it

conclusion: noted

RWS-120033 Public Safety Requirements for Long Term Evolution REL-12 U.S. Department of Commerce (formerly NIST) Discpresented by Andrew Thiessen (U.S. Department of Commerce)

Abstract on Requirements: Public safety in the United States, and more globally, has selected LTE as their technology of choice as they begin looking at evolving their current communications capabilities from narrowband technologies to broadband capable systems. Two areas identified early on that require 3GPP standards development are:

1) The ability for two or more LTE UEs to communicate directly between themselves without infrastructure – (ProSe)

2) The ability for three or more LTE UEs to engage in group based communications efficiently – (proposed WID at SA1#58, 7-11 May 2012; approval for SA#56)

Given that the network operator for the United States public safety LTE network will be created within the US Department of Commerce by August of this year, we have a strong desire to see these features included in Release 12.

discussion: Sprint: focus on mission critical voice, so data needed? so why LTE or use case for data?US Department of Commerce: we are looking at both, but so far we have 9.6kbps data so voice is still the majority; so we expect to use it for both voice and data; some applications will need LTE soon and some operators do not want invest more in current systems and LTE will be the future so the usage will change over timeDish Networks: 1-to-group communication considered, interest in MBMS?US Department of Commerce: yes, we would be also interested in MBMS but we would like to see it driven from the requirements sideFujitsu: traditionally RF requirements for narrowband systems were quite stringent, which frequency bands would be considered (globally), which emission requirementsUS: we have band class 14in US, Canada has 5 by 5 also in band 14, TETRA is also trying to get common spectrum for all of Europe but might not be easy to getVodafone: D2D use cases in 3GPP apply to public safety, do they cover your requirements?US Department of Commerce: proximity services discussed in SA1 which is a good start, range cannot yet be indicated, would like to come up with requirements for RANVodafone: in public safety you would rather use D2D when network is not available while RAN looked at cases where network is available so we need to be sure that public safety requirements are taken into accountUS Department of Commerce: public safety is not limited to off-network case (fireman switch also to D2D when network is available) but you are right we have to look further into the requirements setting

conclusion: noted

RWS-120034 Views on 3GPP Rel-12 and Beyond ZTE Discpresented by Zhongda Du (ZTE)

Abstract on Requirements: The next two 3GPP releases should follow an evolutionary path where the key requirements are summarized as follows:

1. Mobile broadband enha.: Uniform user experience/performance across whole macro cells & increased performance and attention to local traffic delivery for small cells.

2. Enablers for new services and applications: Enhance further the M2M standard towards 2020.3. Improved spectrum utilization: More efficient usage of scattered spectrum.4. Further cost optimization: For network deployment and maintenance, user equipment, content delivery.

Abstract on Potential technologies and roadmap: The time frame for the coming releases should span 15-18 months (including ASN.1 freeze). The list of potential technologies to be standardized should include:M2M further enha., TDD adaptive reconfiguration, Enha. for hotspot and indoor (LTE-Hi), 3D MIMO, Spatial modulation MIMO, Large scale centralized cooperative radio.Furthermore studies should be launched to address: Cooperative relay, Cognitive radio, Adaptive hybrid multiple access scheme, Massive antenna.

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discussion: NTT DOCOMO: slide 12: why do you focus on wireless backhaul?ZTE: use case would be high data rate service on a bus

conclusion: noted

RWS-120035 Considerations for LTE Rel-12 and beyond Motorola Mobility Discpresented by Robert Love (Motorola Mobility)

Abstract on Requirements: To a very large extent LTE and LTE-Advanced have met the requirements from ITU on peak rate and spectrum efficiency. However, the use of wireless services continues to ride an exponential growth curve and the expectations of user experiences for wireless services continues unabated leaving governments to identify new spectrum for the deployment of wireless services. Social networks and the expected explosion from m2m devices are also causing a shift in requirements with an increasing need for efficient support of small packet transactions (lower latency and low control overhead).

Abstract on Potential technologies and roadmap: Rel-10 and Rel-11 features such as carrier aggregation, HetNets, MIMO, and CoMP are expected to provide meaningful improvements in peak rates and cell-edge throughput. But clearly the overall system capacity is not sufficient. In addition it is imperative that there continue to be progress in terms of overall throughput, battery life, overhead reduction, support of aggregation of different "types" of spectrum including other RATs, FDD and TDD modes and TV white space, and cell edge performance. Also, in order to keep LTE competitive and reduce overall product costs it is useful to explore the potential for use of LTE in direct device-to-device communication applications over licensed spectrum.

discussion: Huawei: new carrier type: will you allow legacy UEs access to it for small cells?Motorola Mobility: if standalone carriers can support legacy UEs fine but may not be easySharp: non-backward compatible for small cells?Motorola Mobility: new carrier types that support legacy UEs: we had this in REL-11 but discussion is about standalone; needs to have some performance benefit to give up on legacyCATT: page 14: mobility enhancement for COMP?Motorola Mob: multiple TX points , UEs moving through clusters, CSI RS measurements, could be addressed in REL-12KT: slide 7: multiple carrier aggregation: FDD and TDD included in scope?Motorola Mobility: yes, aggregating FDD and TDD carriers

conclusion: noted

RWS-120036 LG's view on evolution of LTE in Release 12 and beyond LG Electronics DiscAbstract on Requirements: LG's forecast of typical user experiences which LTE may provide in the future

- Firstly, trend analyses for mobile broadband communication are given- Based on the trend analyses, we forecast what would be typical user experiences LTE may provide in the future.- These typical user experiences are, 1) UHD everywhere 2) mobile phone as intelligent agent 3) Low cost &

green

Abstract on Potential technologies and roadmap: We provide our view on which technologies should be pursued in order to realize the aforementioned user experiences, together with rough idea of timeline when these technologies can be dealt with in 3GPP. Potential technologies include the followings (subject to change in the final submission)

- Heterogeneous aggregation- Intra/Inter RAT cooperation- Cloud RAN- Device to device communication- Machine type communication- Relaying enhancements- Application aware communication- Standalone NCT

conclusion: revised in RWS-120050

RWS-120050 LG's view on evolution of LTE in Release 12 and beyond LG Electronics Disc (LATE)Note: Technical contents and abstract unchangedpresented by Youngwoo Yun (LG Electronics)

Abstract on Requirements: LG's forecast of typical user experiences which LTE may provide in the future- Firstly, trend analyses for mobile broadband communication are given- Based on the trend analyses, we forecast what would be typical user experiences LTE may provide in the future.

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- These typical user experiences are, 1) UHD everywhere 2) mobile phone as intelligent agent 3) Low cost & green

Abstract on Potential technologies and roadmap: We provide our view on which technologies should be pursued in order to realize the aforementioned user experiences, together with rough idea of timeline when these technologies can be dealt with in 3GPP. Potential technologies include the followings (subject to change in the final submission)

- Heterogeneous aggregation- Intra/Inter RAT cooperation- Cloud RAN- Device to device communication- Machine type communication- Relaying enhancements- Application aware communication- Standalone NCT

discussion: NTT DOCOMO: page 28: what sort technique do you plan for eIMTA?LG: careful study of intereference issue needed for thisCATT: slide 14: for FDD/TDD CA: TDD only UE would be able to only access TDD carrier? How important do you see TDD/FDD carrier aggregation?LG: will take first part offline, consider this to be a REL-12 SIHitachi: slide 19: combination of relay and CA?LG: worksplit between RAN1 and RAN3 and can combine later

conclusion: noted

RWS-120037 Views on REL-12 and Onwards China Telecom Discpresented by Peng Chen (China Telecom)

Abstract on Requirements: We provide our views on Rel-12 requirements, including compatibility, coverage and throughput improvement, practical backhaul and denser network.

Abstract on Potential technologies and roadmap: We show our general views on research scope and timeline for Rel-12. Also, the focus on related technology components in Rel-12 including coverage enhancement, CoMP, MIMO and HetNet, are provided.

discussion: ZTE: slide 8: LTE and HRPD: on which level will these 2 systems be obligated?China Telekom: is just a high level requirementNTT DOCOMO: slide 5: additional SI for further coverage enhancements in REL-12?China Telekom: yes, further enhancement is considered

conclusion: noted

RWS-120038 KDDI's Views on LTE Release 12 onwards KDDI DiscAbstract on Requirements: This contribution presents KDDI's views on LTE Release 12 onward, envisaging Release 12 deployment lasting until the year 2022 or so (ten years later). On the premise that high frequencies and small cells will be widely used for deployment, the following key requirements are proposed:

- multi-band operation enhancements, such as more effective use of combination of existing low frequencies and new high frequencies, including FDD and TDD combination, etc.

- new trend M2M (MTC), especially so-called 'Real-time' M2M services, which will cause explosion of simultaneous multiple access and the amount of real-time data traffic, for which LTE may need to be optimized

- other interests, such as D2D, SON enhancements, low-cost low power nodes, etc.

conclusion: revised in RWS-120047

RWS-120047 KDDI's Views on LTE Release 12 onwards KDDI Discpresented by Toshiyasu Wakayama (KDDI)

Note: Technical contents of the presentation and abstract text remain unchanged compared to RWS-120038.

Abstract on Requirements: This contribution presents KDDI's views on LTE Release 12 onward, envisaging Release 12 deployment lasting until the year 2022 or so (ten years later). On the premise that high frequencies and small cells will be widely used for deployment, the following key requirements are proposed:

- multi-band operation enhancements, such as more effective use of combination of existing low frequencies and new high frequencies, including FDD and TDD combination, etc.

- new trend M2M (MTC), especially so-called 'Real-time' M2M services, which will cause explosion of simultaneous multiple access and the amount of real-time data traffic, for which LTE may need to be optimized

- other interests, such as D2D, SON enhancements, low-cost low power nodes, etc.

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discussion: LG: slide 12: TDD carrier for UL or DL only, why do you call it TDD?KDDI: is just an example and TDD allows this flexibility dynamicallyATR: slide 17: what does no grant meanKDDI: some schemes without grant in mind (CDMA, IDMA)

conclusion: noted

RWS-120039 Evolving RAN Towards Rel-12 and BeyondSHARP Discpresented by Kimihiko Imamura (Sharp)

Abstract on Requirements: Rapid growth of wireless data traffic demand is expected to result in data usage of 1000 times what it is today by 2020. Therefore, further major system capacity enhancement will be required in future releases.

Abstract on Potential technologies and roadmap: As main solutions to cope with this data traffic explosion, introduction of denser networks, bandwidth extensions and further spectrum efficiency improvements should be considered. In small cells/areas, higher frequency bands (e.g. more than 3GHz) and wider bandwidths can be utilized to deal with the massive data traffic. In addition to the bandwidth extensions, spectrum efficiency improvements both in a macro and a small cell/area can be studied to improve the system capacity further. Significantly evolved design approaches which are complementary to legacy carrier type(s) should be evaluated for substantial system capacity improvements.

discussion: LG: to your conclusions: how to support multiband in CA?Hitachi: slide 9: DL-MUMIMO: dual receiver impact light for UE manufacturer?Sharp: thinks burden in UE receiver can be reducedHitachi: but non-linear processing function might be neededFujitsu: slide 9: ideal or realistic channel state estimation?Qualcomm: you indicated "in TDD reciprocity can be used": tight calibration needed for this?Sharp: correct, need further study

conclusion: noted

RWS-120040 Views on enhancement of system capacity and energy efficiency toward Release12 and onwardHitachi Disc

presented by Tsuyoshi Tamaki (Hitachi)Abstract on Requirements: Larger system capacity should be provided to meet the traffic demand. New KPI such as bit/s/Hz/m^2 and bit/s/Hz/W should be studied for the new requirement.

Abstract on Potential technologies and roadmap:1. HetNet enhancement (mobility, ICIC, CA)2. CoMP enhancement for indoor environment3. Energy efficiency enhancement of BS and system.

conclusion: noted

RWS-120041 Beyond LTE-A: MediaTek’s view on R12 MediaTek Disc (LATE)presented by Jeff Zhuang (MediaTek)

Abstract on Potential technologies and roadmap: R12 should focus on improving system spectrum efficient, supporting good cell planning and management, improving interference handling, and providing more meaningful usage cases. Therefore, current existing SI/WI, such as eCA, CoMP, Advanced-MIMO, MDT, feICIC, MTC, Hetnet enhancement, and DDA should be extended and studied in R12. New features should be submitted according to the prioritization process.

discussion: China Unicom: slide 14: why use of MDT in REL-12 is LTE only?MediaTek: no particular reason, was just to focusNTT DOCOMO: slide 9: changing numerology for LTE TDD small cell?MediaTek: changing numerology will break backward compatibility so normally we avoid this, UE will not be cheaper if we do something on small cells

conclusion: noted

RWS-120042 Potential Technologies and Road Map for LTE Release 12 and Beyond ITRI, HTC Discpresented by (ITRI)

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Abstract on Potential technologies and roadmap: The potential technologies we consider essential to the continuing success and competiveness of LTE can be summarized in two major categories:

1. Substantially improving downlink spectral efficiency by employing full CSI feedback to further enhance non-codebook based DL CoMP.

2. Further bandwidth expansion by tightly integrating 3GPP or non-3GPP families of technologies.

discussion: LG: slide 9: CA between LTE and non-LTE carriers can be achieved by changes to HARQ entity?ITRI: yesLG: MAC operates similar for both and adding another HARQ entity for the other system? So LTE does not need to change?ITRI: can take this offlineHitachi: slide 11 full CSI feedback for COMP: channel information?ITRI: that's what H is standing forFujitsu: slide 10: phantom or virtual UE? more independent operation?ITRI: is a high level concept, we consider all possible candidatesFujitsu: tight synchronisation needed like for CA? seems not neededSharp: merge of data signalling from different RATs would be a better term than aggregation of spectrum hereITRI: agrees

conclusion: noted

RWS-120043 New concept to maximize the benefit of interference rejection at the UE receiver: interference suppression subframes (ISS) BroadcomDisc (LATE)no presentation timeslot guaranteed

Abstract on Potential technologies and roadmap: In this paper we present a method that maximizes the benefit of interference rejection at the UE receiver, termed interference suppression subframes (ISS). This concept is motivated by recognizing that the current state of the LTE standard doesn’t allow a meaningful interference suppression processing at the user equipment (UE) receiver. We introduce ISS in which all users from different base stations are scheduled with favorable transmission mode (TM) combinations that allow the UEs to reliably estimate the interference (or interference statistics) to aid in successfully applying interference suppression receiver leading to improved performance. The information about ISS may be broadcast from a serving cell in the form of a bit map to configure the ISS.

conclusion: revised in RWS-120051 (before presentation) adding a ppt version

RWS-120051 New concept to maximize the benefit of interference rejection at the UE receiver: interference suppression subframes (ISS) BroadcomDisc (LATE)no presentation timeslot guaranteedNote: Technical contents and abstract unchanged.presented by Florin Baboescu (Broadcom)

Abstract on Potential technologies and roadmap: In this paper we present a method that maximizes the benefit of interference rejection at the UE receiver, termed interference suppression subframes (ISS). This concept is motivated by recognizing that the current state of the LTE standard doesn’t allow a meaningful interference suppression processing at the user equipment (UE) receiver. We introduce ISS in which all users from different base stations are scheduled with favorable transmission mode (TM) combinations that allow the UEs to reliably estimate the interference (or interference statistics) to aid in successfully applying interference suppression receiver leading to improved performance. The information about ISS may be broadcast from a serving cell in the form of a bit map to configure the ISS.

discussion: RAN chairman: presentation time slot is granted despite the late Tdoc request but just for 10minMotorola Mobility: degradations for references 4 and 5 mentioned but should not be used for thisBroadcom: were the closest references I found

conclusion: noted

RWS-120044 Void RIM Disc -conclusion: withdrawn

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3 Wrap-up of the workshopRWS-120045 Summary of the workshop on Release 12 and onward RAN chairman (NTT DOCOMO) Info

discussion: RAN chairman: tried to summarize major proposals in a high level way, will discuss more details in the RAN meeting when we come to WIsRAN chairman: Enhanced small cells appeared in the presentations under different names (soft cell, phantom cell, amorphous cell etc.)RAN chairman: this document is not provided for approvalTelefonica: so we will discuss this at RAN #56RAN chairman: RWS-120045 will be provided to RAN #56 as well

conclusion: noted

4 Closing of the workshopAs chairman of the workshop, the TSG RAN chairman Takehiro Nakamura (NTT DOCOMO) thanked the delegates for participating and the good presentations to the workshop and RAN vice chairmen and MCC for their support of the meeting.He thanked the European Friends of 3GPP (EF3) for hosting this meeting and closed the meeting on Tuesday June 12th, 2012 at about 18:00.

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Annex A:List of participantsThe list of participants of this workshop iswill be attached to this report.

Total number of participants: 246xxx (registered before the meeting: 296)

Annex B:List of TdocsThe list of Tdocs of this workshop iswill be attached to this report.

Total number of Tdocs: 5247 (RWS-120001 - RWS-12005247) of which 5145 Tdocs are available, i.e. 12 wasare not submittedavailable..

Annex C:History

Document history

Date Tdoc Subject

07.05.2012 - Skeleton report provided before the workshop.

01.06.2012 - Revised skeleton report provided before the workshop.(revision marks compared to version of 07.05.2012)

08.06.2012 - Revised skeleton report provided before the workshop.(revision marks compared to version of 01.06.2012)

12.06.2012 - Draft report provided after the workshop(revision marks compared to version of 08.06.2012)

16.06.2012 - Draft report for email review until end of June 2012(revision marks compared to version of 12.06.2012)

xx.07.2012 RWS-120052 Final report of the workshop after email review

In case of comments/questions/corrections please contact:

Author: Dr. Joern Krause (3GPP TSG RAN MCC Support)

ETSI Mobile Competence Centre (MCC)Tel. +33-492-94 4261email: [email protected]

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draft report of 3gpp ran workshop on release 12 and onwards

Technology

gpp tm

gpp ef3tsg

gpp organizational partnerslte

gpp postal address

gpp support office address

vice chairman

trade mark of etsi

informationdraft report