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
Submission
November 2015
Jim Lansford (CSR-Qualcomm)Slide 2
Abstract
Panel Discussion on
Perspectives on IEEE 802.11 in 5G/NGMNTutorial Session
Dallas, Texas USA
November 9, 2015
doc.: IEEE 802.11-15/1266r1
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
Jim Lansford (CSR-Qualcomm)Slide 3
doc.: IEEE 802.11-15/1266r1
Submission
November 2015
Jim Lansford (CSR-Qualcomm)Slide 4
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
doc.: IEEE 802.11-15/1266r1
Submission
Presentations by Panelists
Jeorge HurtarteLaurent Cariou
Juan Carlos ZúñigaGeorge CalcevStefano Faccin
November 2015
Jim Lansford (CSR-Qualcomm)Slide 5
doc.: IEEE 802.11-15/1266r1
Submission
November 2015
Jim Lansford (CSR-Qualcomm)Slide 6
Jeorge Hurtarte, Teradyne
doc.: IEEE 802.11-15/1266r1
Submission
“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
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
NGMN 5G White Paper Contents*November 2015
Slide 8 Jeorge Hurtarte, Teradyne
* Source: http://ngmn.org/fileadmin/ngmn/content/images/news/ngmn_news/NGMN_5G_White_Paper_V1_0.pdf
doc.: IEEE 802.11-15/1266r1
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.”
Slide 9 Jeorge Hurtarte, Teradyne
* Source: http://ngmn.org/fileadmin/ngmn/content/images/news/ngmn_news/NGMN_5G_White_Paper_V1_0.pdf
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
• 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.”
Slide 10 Jeorge Hurtarte, Teradyne
* Source: http://ngmn.org/fileadmin/ngmn/content/images/news/ngmn_news/NGMN_5G_White_Paper_V1_0.pdf
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
• 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.”
Slide 11 Jeorge Hurtarte, Teradyne
* Source: http://ngmn.org/fileadmin/ngmn/content/images/news/ngmn_news/NGMN_5G_White_Paper_V1_0.pdf
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
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
Slide 12 Jeorge Hurtarte, Teradyne
* Source: http://ngmn.org/fileadmin/ngmn/content/images/news/ngmn_news/NGMN_5G_White_Paper_V1_0.pdf
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
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
doc.: IEEE 802.11-15/1266r1
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)
doc.: IEEE 802.11-15/1266r1
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
Laurent Cariou (Intel)
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
• 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
Laurent Cariou (Intel)
November 2015
doc.: IEEE 802.11-15/1266r1
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
November 2015
Laurent Cariou (Intel)
doc.: IEEE 802.11-15/1266r1
Submission
November 2015
Jim Lansford (CSR-Qualcomm)Slide 18
Juan Carlos Zúñiga, Interdigital
doc.: IEEE 802.11-15/1266r1
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
doc.: IEEE 802.11-15/1266r1
Submission
Common Core + Several RANs
From the NGMN Alliance 5G whitepaper:
Juan Carlos Zúñiga (Interdigital)
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
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
Juan Carlos Zúñiga (Interdigital)
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
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
Juan Carlos Zúñiga (Interdigital)
November 2015
doc.: IEEE 802.11-15/1266r1
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
Juan Carlos Zúñiga (Interdigital)
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
November 2015
Jim Lansford (CSR-Qualcomm)Slide 24
George Calcev, Huawei
IEEE 802.11 in 5G
doc.: IEEE 802.11-15/1266r1
Submission 25
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
doc.: IEEE 802.11-15/1266r1
Submission
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)
George Calcev (Huawei)
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
• 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?
George Calcev (Huawei)
November 2015
doc.: IEEE 802.11-15/1266r1
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?
George Calcev (Huawei)
November 2015
doc.: IEEE 802.11-15/1266r1
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
George Calcev (Huawei)
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
• 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
George Calcev (Huawei)
November 2015
doc.: IEEE 802.11-15/1266r1
Submission
November 2015
Jim Lansford (CSR-Qualcomm)Slide 31
Stefano Faccin, Qualcomm
doc.: IEEE 802.11-15/1266r1
Submission
• 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)
doc.: IEEE 802.11-15/1266r1
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
Stefano Faccin (Qualcomm)
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
November 2015
Stefano Faccin (Qualcomm)
doc.: IEEE 802.11-15/1266r1
Submission
• 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
November 2015
Stefano Faccin (Qualcomm)
doc.: IEEE 802.11-15/1266r1
Submission
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?
November 2015
Jim Lansford (CSR-Qualcomm)Slide 36
doc.: IEEE 802.11-15/1266r1
Submission
November 2015
Jim Lansford (CSR-Qualcomm)Slide 37