Doc.: IEEE 802.11-15/1266r1 Submission November 2015 Jim Lansford (CSR-Qualcomm)Slide 1 Tutorial/Panel Discussion: Perspectives on IEEE 802.11 in 5G/NGMN

doc.: IEEE 802.11-15/1266r1

Submission

November 2015

Jim Lansford (CSR-Qualcomm)Slide 1

Tutorial/Panel Discussion:Perspectives on IEEE 802.11 in 5G/NGMN

Date: 2015-11-10

Name Company Address Phone email

Jim Lansford CSR-Qualcomm 100 Stirrup Circle, Florissant, CO 80816

+1-719-286-8660 [email protected]

Jeorge Hurtarte Teradyne

Juan Carlos Zuniga Interdigital

Laurent Cariou Intel

George Calcev Huawei

Stefano Faccin Qualcomm

Authors:

doc.: IEEE 802.11-15/1266r1

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November 2015


Abstract

Panel Discussion on

Perspectives on IEEE 802.11 in 5G/NGMNTutorial Session

Dallas, Texas USA

November 9, 2015

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Submission

Background/Format• The theme of this panel discussion is the role

802.11/WLAN systems will play in 5G networks• There have been several presentations to introduce this

topic in 802.11 (see 802.11 area in Mentor)– “Follow-up on 802.11 as a component” – 15/1153r1 – Laurent

Cariou (Intel)– “802.11 as a component (tutorial)” – 15/757r1 – Adrian Stephens

(Intel)– “802.11 as a Component” – 15/593r2 – Adrian Stephens (Intel)– “NGMN 5G White Paper Overview” – 15/547r0 – Jeorge Hurtarte

(Teradyne)• Each panelist will give a brief opening presentation• Moderator will pose some questions to the panel• Panel will take questions from the audience

November 2015


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November 2015


Presenter(s) Name: Affiliation:

Jim Lansford (Moderator) CSR-Qualcomm

Jeorge Hurtarte Teradyne

Laurent Cariou Intel

Juan Carlos Zúñiga Interdigital Communications

George Calcev Huawei

Stefano Faccin Qualcomm

Introductions

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Presentations by Panelists

Jeorge HurtarteLaurent Cariou

Juan Carlos ZúñigaGeorge CalcevStefano Faccin

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Jeorge Hurtarte, Teradyne

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“The NGMN Alliance is an industry organization of world-wide Telecom Operators, Vendors and Research Institutes (see www.ngmn.org) and was founded by international network operators in 2006. Its objective is to ensure that the functionality and performance of next generation mobile network infrastructure, service platforms and devices will meet the requirements of operators and, ultimately, will satisfy end user demand and expectations. “ 1

“It is the NGMN Alliance goal to drive and guide the development of all future mobile broadband technology enhancements with a focus on “5G”. The targets of these activities are supported by the partnership of worldwide leading operators, vendors, universities, and successful cooperation with other industry organizations.”

Who is the NGMN Alliance?*

Slide 7 Jeorge Hurtarte, Teradyne

1. Sources: http://ngmn.org/fileadmin/ngmn/content/documents/pdf/about_us/NGMN_at_a_Glance_-_January_2014.pdf and www.ngmn.org

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NGMN 5G White Paper Contents*November 2015


* Source: http://ngmn.org/fileadmin/ngmn/content/images/news/ngmn_news/NGMN_5G_White_Paper_V1_0.pdf

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Submission

• NGMN Spectrum Highlights*

“Leverage spectrum – Higher frequencies (e.g., centimetre and millimetre waves) and licence exempt spectrum should be exploited to complement …as a complement to the available mainstream licensed spectrum resource…simultaneous connections to multiple access points need to be supported.“

“A new RAT could be motivated by higher carrier frequencies (e.g., bands above 6GHz), lower latency [E2E: < 1ms], and specific use cases.”

“In order to facilitate migration towards 5G, NGMN recommends that LTE/ LTE-Advanced and Wi-Fi, as well as their evolution, are to be supported by the new 5G network design. Thus, the access-agnostic network functions should accommodate any new RATs, as well as LTE/ LTEAdvanced, Wi-Fi, and their evolution.”



November 2015

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• NGMN Spectrum Highlights (continued)*

“A fundamental requirement is that operators must be free to “re-farm” their existing mobile spectrum holdings for 5G as well as being able to gain timely access to spectrum that is already harmonised for mobile but is not yet assigned and additional spectrum that may be identified at the ITU World Radiocommunication Conference 2015 (WRC-15).”

“Supplementary spectrum, made available on a shared basis, will be required to deliver extra capacity where needed… Access to licence-exempt spectrum as a useful supplement for certain applications and may be seamlessly integrated into the 5G platform.”



November 2015

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• NGMN Spectrum Highlights (Continued)*

“Spectrum flexibility can bring benefits of spectral efficiency gains, examples include: increasing exclusive spectrum with emphasis on improving regional/global harmonisation; smart carrier aggregation to use spare frequencies; spectrum trading; and managing fair access to supplementary shared spectrum.”

“In 5G, network based positioning in three-dimensional space should be supported, with accuracy from 10 m to <1 m at 80% of occasions, and better than 1 m for indoor deployments. Tracking of high speed devices will be required to provide this location accuracy in a real-time manner.”



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NGMN Roadmap: Commercial system ready in 2020

Standards ready end of 2018

Trials start in 2018

Initial system design in 2017

Detailed requirements ready end of 2015



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5G and 802.11

Slide 13 Laurent Cariou (Intel)

Authors:

Name Affiliations Address Phone Email Laurent Cariou Intel 503-712-5560 [email protected]

November 2015

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Submission

• NGMN focuses mainly on 3GPP standardization

• High-level objectives compared to 4G:– Higher throughput (10X), lower latency, support higher user density (100X)

– Lower cost, better energy efficiency…

– Able to support a wider range of services…

• Main solutions:– new air interfaces (IoT, <6GHz, >6GHz millimeter wave)

– Densification

– new network architecture

Slide 14

“5G” terminology to describe the evolution of cellular networks in the incoming years

November 2015

Laurent Cariou (Intel)

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Submission

• Reaching the requested level of densification is challenging for operators:• cost, installation (especially indoors - negotiation with venue owners), management, …

• Some key facilitators:• Use of unlicensed spectrum

• Use of neutral-host small cells deployed

• Flatter and cheaper architecture

• 802.11 deployed indoor and in dense areas combines these facilitators (great solution for operators)

• For operators: Fast deployment of services, low cost, local management…

• For users: a system that “works”

Need to ensure that customers continue seeing 802.11 as a system that “works”• Simple, seamless, secure access, with features and flexibility to support new services

• With the right level of integration with each operator’s network

Slide 15

Densification for 5G


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• Loose core network integration

• S2b untrusted-network solution (any network) is used today for Wi-Fi calling

• Deep integration of Radio-Access Network level, with LTE-Wi-Fi aggregation (LWA)

• For WiFi APs collocated or non-collocated with LTE small cells

• This opens the door to 802.11ad/ay integration as well in the future

• 5G may create deeper architecture changes which can also impact interworking

• need for management interfaces in a flatter network?

Need to work much closer with operators to ensure the good level of integration

Slide 16

Integration of 802.11 technologies in 5G


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Submission

• WiFi is a key technology for mobile data• 80% of smartphone traffic today

• IEEE 802.11 will stay an essential component of wireless broadband access, and is very relevant for 5G• For users: Need to make sure it meets expectations: a system that “works”

• Air interface design: 802.11ax and 11ay are essential technologies for the future

• Always best connected: simple and seamless connectivity

• New bands?

• For operators: Need to ensure the good level of interworking with 5G• make 802.11 a component

Thoughts

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Juan Carlos Zúñiga, Interdigital

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Submission 19

Radio Access Networks (RANs) could be deployed as “Standalone” or using a multi-connectivity framework

5G framework should enable splitting of data and control functions

5G operators want flexibility to initially deploy RANs based on their individual roll out plans for 5G services and spectrum availability

LTE is expected to evolve as a component within the 5G multi-RAN framework

802.11 WLAN (Wi-Fi) is the primary non-3GPP radio access being considered

InterDigital Confidential and Proprietary © 2015 InterDigital, Inc. All rights reserved.

5G will be designed with native support for connectivity across multiple radio networks

Non-3GPP 5G Radio Access (e.g. Wi-Fi)

5G Ultra-Mobile Broadband Above 6 GHz Radio Access

5G Flexible Access Below 6 GHz Radio Access

5G LTE Evolution Radio Access

3GP

P f

ocu

s fo

r 5G

5G – Combining Multiple Radio Networks

Juan Carlos Zúñiga (Interdigital)

November 2015

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Common Core + Several RANs

From the NGMN Alliance 5G whitepaper:


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NGMN Alliance considerations on 5G Core-RANs interface options

• NGMN currently considers 3 options– Option 1 has minimal impact to existing RATs but limitations to

introduce full 5G performance services– Option 2 allows for full evolution of network services for 5G but

requires new interfacing with EPC and Fixed/Wi-Fi– Option 3 is the most comprehensive approach by integrating LTE, 5G

and Fixed/Wi-Fi but has multiple implications.• NGMN mandates further research into Option 3 before drawing

conclusions.

• Option 3 allows to fully leverage capabilities of IEEE 802 technologies– However option 3 requires IEEE 802 to provide an appropriate

network interface to the 5G Core


November 2015

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WLAN Network InterfacesA managed RAN requires standard network interfaces for:•Control

– Dynamic and efficient service deployment, sliceable network configuration and reconfiguration, etc.

•Management – Fault management, billing and charging, performance monitoring, etc.

•Data– Common and simplified data structures

5G = Sliceable!– Multiple independent services over the same radio infrastructure (IaaS)– Rapid service deployment and (re)configuration

802.11 provides a Radio Link – to become a full RAN it requires standard backend network connectivity


November 2015

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Submission

P802.1CF Interface option to 5G

Access RouterAccess NetworkTerminal

TerminalInterface

R1

Coordination and

InformationService

R2 R10

R8AN CtrlTE Ctrl

SubscriptionService

Access Router

Interface R3

R4

AR Ctrl R9

NA BackhaulR6

R5 R7

R11

IEEE 802 Radio Access Network 5G Core NW Functions

802.11 STA

802.11 AP


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George Calcev, Huawei

IEEE 802.11 in 5G

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ITU-R IMT-2020 visionIMT-2020 (“5G”) usage scenario

Usage scenarios extend from MBB to Internet of Things.

IMT-2020 (“5G”) Key capabilities

Different usage scenarios have quite different capability requirements, that will be hard to be satisfied by a single existing RAT

Recommendation ITU-R [IMT.VISION] is the basis of 3GPP definition of 5G

George Calcev (Huawei)

November 2015

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IEEE 802.11-2016 IEEE802.11

Peak Rate <7Gbps

User data rate Not guaranteed

Spectrum efficiency Not guaranteed (contention, interference)

Mobility Pedestrian

Latency Not guaranteed (network discovery, contention, interference)

Connection density High (conference rooms, stadia)

Network Energy Efficiency

Not guaranteed (network discovery, ontention, interference)

Area Traffic Capacity

High (limited by backhaul)


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• IEEE 802.11 has a great presence and a great momentum as low cost wireless access– ABI Research estimates that “In 2014, over 2.4 billion Wi-Fi enabled

devices were shipped, while the industry surpassed 10 billion Wi-Fi enabled devices shipped cumulatively in early 2015. Over half of product shipments are dual-band (2.4 GHz and 5 GHz) now. The market is forecast to continue to grow rapidly over the next 5 years as the technology is adopted across a wide variety of markets, including consumer, mobile, automotive, and emerging markets.”

– https://www.abiresearch.com/market-research/product/1021330-wi-fi/

Is IEEE 802.11 Relevant for 5G?


November 2015

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Submission

• The 5G requirements are defined by ITU-R (IMT 2020) and NGMN, the 5G standardization effort is led by the 3GPP organization

• IEEE 802.11 is a complementary technology to 5G

• Making IEEE802.11 better and being a partner in the 5G ecosystem is the way to go

Is IEEE802.11 influential in those behind 5G?


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Submission

• WLAN peak rates increased exponentially (MIMO, channel aggregation)• Increased spectrum efficiency (MIMO, MU-MIMO, higher MCS)• Low power amendments (such 802.11ah)• Increased bandwidth (160 MHz in < 6GHz and 2 GHz in 60 GHz)• Better security

IEEE 802.11 Spectacular Progress

802.11ad

802.11ac

802.11n

802.11a

802.11b

802.11ay


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• Better integration with other wireless networks– Interworking with cellular networks- tight integration with cellular networks– Improved coexistence– Easier remote control, management and maintenance

• Efficient usage of available spectrum – improved operation in different frequency bands

– Seamless channel transition with best band selection between TVWS, 900MHz, 2.4GHz, 5.x GHz,60 GHz and cellular networks

• Low latency for– Connectivity to Internet,– Transition between access points,– Peer discovery (P2P) and service discovery

• Improved PHY and MAC performance– Higher rates > 100Gbps– Interference mitigation for ultra dense deployments– Energy/power savings (green networks)– Efficient design for short packets, low duty cycle, and low power

• Improved link and network reliability and availability• Better security

Remaining Challenges for IEEE802.11


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Stefano Faccin, Qualcomm

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• 5G activities are concurrently happening in several fora besides 3GPP:– ITU/IMT2020: driving 5G cellular definition, defining timeline and process for IMT-2020,

evaluation criteria, requirements and evaluation methodology– NGMN: defining verticals, architectural aspects, building blocks– 5G Forum, Future Forum, IMT-2020PG, 5GMF, 5GPPP, and many more…

• 5G in 3GPP is the sum of multiple activities– Definition of a set of use cases and scenarios specific for 5G (in particular verticals like IoT, V2X,

etc.)– Definition of a new RAT (radio access technology) to cater for new requirements, use cases, and

verticals (including high density environments)– Definition of a Next Generation CN (Core network) to support such scenarios/verticals, new

connectivity/subscription/service models to cater for the way the Internet is evolving, and multi-RAT interworking, considering that only astute combinations of technologies can provide the answer to all scenarios

• 3GPP is working with its OPs (ARIB, ATIS, ETSI, TTC, TTA, CCSA, TSDSI) to design a candidate technology (including a new RAT and CN) for the IMT-2020 process

• 3GPP is defining the core network for 5G and the interworking between RATs

Slide 32

5G in 3GPP

November 2015

Stefano Faccin (Qualcomm)

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Submission Slide 33

5G in 3GPP (Standards Timeline)

November 2015

Rel 13 Rel 14 Rel 15 Rel 165G RAN

reqs

1st phase RAN WI(s)

2nd phase RAN WI(s)

Continued LTE evolution

5G evolution

1st phase NextGen Core Network

Initial Study NextGen

Core Network

5G System Requirements(SMARTER) Phase 2

5G System Requirements(SMARTER) Phase 1

2nd phase NextGen Core

Network

Defines use cases and scenarios, independently of architecture and radio technology

Defines architecture and radio technologies integration

Defines interfaces between radio network and core network


doc.: IEEE 802.11-15/1266r1

Submission

• With the introduction of 4G and the Evolved Packet Core (EPC), the need for better integration with Wi-Fi has emerged

• Two main efforts• System level integration

• Support of simultaneous connectivity for different services over cellular and trusted Wi-Fi (operator-deployed Wi-Fi) – S2a connectivity

• Support of simultaneous connectivity for different services over cellular and untrusted Wi-Fi (via a secure tunnel to an ePDG) – S2b connectivity

• Ability to transfer IP flows of a given service over both cellular and trusted/untrusted Wi-Fi – NBIFOM (Network-Based IP Flow Mobility)

• Control of IP traffic mobility between cellular and WLAN via policy-based mechanisms defined by 3GPP

• Tighter integration: LWA (LTE-Wi-Fi aggregation)• Targets deployments of LTE and Wi-Fi APs (possibly co-located, or legacy APs)

• Cellular RAN (eNB) has control of selection of Wi-Fi AP and of traffic steering

Slide 34

802.11 in 3GPPWhat has been done so far

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• The 802.11 family has been part of the 3GPP e2e design for a long time– Several solutions for interworking/interoperation defined for over a decade

– Increased level of sophistication, as technology & operator interest evolved

– For example: UMA, s2a/s2b/s2c interfaces, LTE-WiFi PDCP aggregation, etc

• We know 3GPP will define a new radio & an evolved core

• We expect the new radio to operate in licensed spectrum & in unlicensed spectrum in a license-assisted manner

• We expect interworking & interoperation with 802.11 to be part of the 3GPP design from day 1, as for previous generations

Slide 35

Role of IEEE in 3GPP 5G Effort

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Questions for Panelists

1. Is 802.11 relevant to 5G?

2. Can 5G meet its goals without 802.11?

3. Is 802.11 sufficiently influential in those behind 5G?

4. What next steps should 802.11 take?

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November 2015


Documents

Doc.: IEEE 802.11-15/1266r1 Submission November 2015 Jim Lansford (CSR-Qualcomm)Slide 1 Tutorial/Panel Discussion: Perspectives on IEEE 802.11 in 5G/NGMN