RAN#71 Rel-14 LTE and 5G-New Radio Statusstd-share.itri.org.tw/Content/Files/Event/Files/2. RAN_71 Status Repor… · RAN SI 5G-NR forward compatibility will be key to phase-in the

Copyright 2016 ITRI 工業技術研究院

RAN#71

Rel-14 LTE

and

5G-New Radio Status

工研院資通所

無線新應用創研部

顏嘉邦

2016/05/06


Outline

3GPP Architecture

5G Status

New Radio (NR)

LTE evolution


3GPP Architecture


3GPP Architecture The Four Technical Specification Groups (TSG) in 3GPP are;

Radio Access Networks (RAN)

Service & Systems Aspects (SA)

Core Network & Terminals (CT)

GSM EDGE Radio Access Networks (GERAN).

The Working Groups (WGs) meet regularly and come together for their quarterly TSG Plenary

meeting, where their work is presented for information, discussion and approval.

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5G Status from RAN#71


RAN Chairman - Way forward

3GPP submission to IMT 2020 (aka 5G) will include

“New Radio of 5G”, aka 5G-NR

LTE

It is for later discussion whether this will be done in a single or two RITs (formal submissions) and how the evaluation process will be organized

In case we decide to have two RITs, it may not be necessary that both RITs fulfill all IMT-2020 requirements. This will also depend on the criteria that will be defined by WP5D to be an approved IMT-2020 technology

5G-NR shall eventually address all requirements and usecases identified in the RAN SI

5G-NR forward compatibility will be key to phase-in the different features in different releases in an optimal way. The Technology SI shall study the best way to achieve that!

Note: 5G-NR is a temp term for the “New Radio of 5G”


Highlight – 5G-NR

New Approved SI/WI – RAN plenary

RP-160671 New SID Proposal: Study on Next Generation New

Radio Access Technology NTT DOCOMO

SI: Scenario and requirements for next generation

RP-160523 Status report of SI Study on Scenarios and

Requirements for Next Generation CMCC

For Email approval

Email Discussion: [RAN#71-01] SR/TR on requirements & scenarios

for Next Generation (CMCC)

TR38.913-021 under email discussion


RP-160671 New SID Proposal: Study on Next Generation New Radio Access Technology NTT DOCOMO

The study aims to develop an NR access technology to meet a

broad range of use cases including enhanced mobile broadband,

massive MTC, critical MTC, and additional requirements

defined during the RAN requirements study.

The new RAT will consider frequency ranges up to 100 GHz

[TR38.913].

Detailed objectives of the study item are:

(1) Target a single technical framework addressing all usage

scenarios, requirements and deployment scenarios defined in

TR38.913 including

Enhanced mobile broadband (eMBB)

Massive machine-type-communications (mMTC)

Ultra reliable and low latency communications (URLLC)


(2) The new RAT shall be inherently forward compatible

It is assumed that the normative specification would occur in

two phases: Phase I (to be completed in June 2018) and Phase

II (to be completed in December 2019)

Phase I specification of the new RAT must be forward

compatible (in terms of efficient co-cell/site/carrier operation)

with Phase II specification and beyond, and backward

compatibility to LTE is not required

Phase II specification of the new RAT builds on the

foundation of Phase I specification, and meets all the set

requirements for the new RAT.

Smooth future evolution beyond Phase II needs to be ensured

to support later advanced features and to enable support of

service requirements identified later than Phase II

specification.


(3) Initial work of the study item should allocate high priority on gaining a common understanding on what is required in terms of radio protocol structure and architecture to fulfil objective 1 and 2, with focus on progressing in the following areas

Fundamental physical layer signal structure for new RAT

Waveform based on OFDM, with potential support of non-orthogonal waveform and multiple access

FFS: other waveforms if they demonstrate justifiable gain

Basic frame structure(s)

Channel coding scheme(s)

RAN1


Radio interface protocol architecture and procedures

Radio Access Network architecture, interface protocols and procedures,

Study on the above 2 bullets shall at least cover:

Study the feasibility of different options of splitting the architecture into a

“central unit” and a “distributed unit”, with potential interface in between,

including transport, configuration and other required functional interactions

between these nodes [RAN2, RAN3];

Study the alternative solutions with regard to signaling, orchestration, …, and

OAM, where applicable [in co-operation with SA5];

Study and outline the RAN-CN interface and functional split [in co-operation

with SA2] [RAN2, RAN3];

Study and identify the basic structure and operation of realization of RAN

Networks functions (NFs). Study to what extent it is feasible to standardize

RAN NFs, the interfaces of RAN NFs and their interdependency [RAN3];

Study and identify specification impacts of enabling the realization of

Network Slicing [in co-operation with SA2] [RAN2, RAN3];

Study and identify additional architecture requirements e.g. support for QoS

concept, SON, support of sidelink for D2D [RAN1, RAN2, RAN3].

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RAN2/RAN3


Fundamental RF aspects – especially where they may impact

decisions on the above, e.g.,

Study and identify the aspects related to the testability of RF and

performance requirements

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RAN4


(4) Study and identify the technical features necessary to enable

the new radio access to meet objective 1 and 2, also including:

Tight interworking between the new RAT and LTE

Interworking with non-3GPP systems

Operation in licensed bands (paired and unpaired), and

licensed assisted operations in unlicensed bands

[Standalone operation in unlicensed bands is FFS]

Efficient multiplexing of traffic for different services and use

cases on the same contiguous block of spectrum

Stand alone operation in licensed bands

Note 1: The scope of Phase I will be determined when agreeing

on Phase I WID(s).

Note 2: Stated KPI values and deployment scenarios to be

aligned to scenarios and requirement SI outcome


(5) Provide performance evaluation of the technologies identified for

the new RAT and analysis of the expected specification work

(6) Identify relevant RF parameters used to be used for sharing and co-

existence studies

(7) Study and identify technical solutions that enable support for

wireless relay


Proposed 5G-NR Timeline


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19


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LTE Evolution -

New approved LTE SI/WI


New Approved LTE SI/WI

RAN1

New WI/SI Approved for RAN1

WI MUST RP-160680

WI FD-MIMO RP-160623

WI eMBMS RP-160675

WI UL capacity enh. RP-160664

WI SRS carrier switching RP-160676

SI FeCoMP RP-160665


New Approved LTE SI/WI

RAN2

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WI L2 latency reduction RP-160667

WI Light connection RP-160540

WI Mobility connection RP-160636

WI LWA enhancements RP-160600

WI Indoor Position RP-160538

SI VoLTE RP-160563

SI FeD2D RP-160677


New Approved SI/WI

– RAN3/RAN4


SI Context Aware Service Delivery

RP-160633

SI Flexible eNB-ID and Cell-ID RP-160534

SI HSPA and LTE Joint Operation RP-160571


WI BS AAS RP-160548

WI Measurement gap enhancement

RP-160678

WI MIMO OTA RP-160603

SI Flex bandwidth RP-160681


Thank You

Documents

RAN#71 Rel-14 LTE and 5G-New Radio Statusstd-share.itri.org.tw/Content/Files/Event/Files/2. RAN_71 Status Repor… · RAN SI 5G-NR forward compatibility will be key to phase-in the