2. Outline Introduction U C Use Cases Commercial Public Safety
Architecture LTE Direct LTE + WLAN Standardization 3GPP IEEE Wi-Fi
Alli Wi Fi Alliance WiGig Conclusions 2
3. Beyond 4G 3
4. Why D2D? 3G AMC+HARQ 4G & Beyond OFDM+MIMO CDMA Source:
Intel 4 4 OFDM+MIMO Heterogeneous CoMP/eICIC Networks Spectral
Efficiency 2G Network Efficiency Wireless Technology is at a
turning point
5. D2D design approaches WAN top-down approach: Expanding
heterogeneous cellular network to include D2D capability (E.g. 3GPP
LTE D2D) WLAN bottom-up approach: Expanding and integrating
existing standalone D2D solutions (E.g. WiFi Direct, Bluetooth,
NFC) 5
6. Types of D2D Stand-alone and Self-organizing Network
Assisted or Network Controlled Network Integrated and Heterogeneous
Network WLAN D2D WAN + WLAN D2D WAN D2D (E.g. WiFi Direct,
Bluetooth, NFC) , ) (E.g. LTE + WiFi Direct) (E.g. 3GPP LTE D2D)
Source: Intel 6
8. D2D Applications What do we have now? Share texts, photos,
video Sh t t h t id clips Ex. Color, Tooth Tag, Alljoyn Find shops
Ex. Fouresquare Radar, Twitter Discover Tab Tab, NearVerse LoKast,
Google MAP Data Text Voice V i VoIP What will we have in the
future? Enhanced social networking Enhanced mobile advertisement
Home automation Public Safety Video Source: IEK 8
9. D2D Applications Attributes Evolution of LBS P
Proximity-based S i it b d Service (ProSe) i (P S ) APP discovery
and communication without GPS or centralized servers. servers
Timely Direct Enhanced User Experience Timely, Direct, 9
10. Use Cases - Restricted Discovery Restricted discovery
describes a basic scenario for ProSe discovery. Mary and John are
friends Proximity P i it Johns ProSe-enabled UE Marys ProSe-enabled
UE M P S bl d Mary and Susan are not friends Susans ProSe-enabled
UE 10
11. Use Case - Open Discovery Open discovery describes a case
in which an p y UE discover another UE without permission by the
discoverable UE UE. Advertisement Interactive discovery Digital
Signage 11
12. Use Case Service Continuity This use case depicts service
continuity p y between the network infrastructure and the direct
communication path path. Core Network Control + Data Core Network
Control + Data Control Control Data 12
13. Use Case - Offloading Offload much traffic load to the
locally shared communication, such as wifi, femto, y even proximity
based direct communication. Interworking with unlicensed band
provides operators a costless service. 13
14. Use Case Public Safety In the United States, LTE has been
selected by the FCC as the technology for the Public Safety Network
Network. In Europe there is an ongoing discussion on spectrum to be
chosen for broadband Public Safety held by CEPT ECC WG FM PT 49.
Mission Critical Voice is the priority p y Device-to-Device calling
3GPP RAN Rel-12 will study options for device-to-device
communication and device discovery Talk Group / Push-To-Talk
Calling 3GPP SA GCSEL will study options for group and PTT
communication in Rel 1 Rel-1 14
15. Disaster Scenarios RonAgamGettyImages 15
16. Fire and Rescue services Firefighters communicate with each
other g even under no network coverage, for example, network is
unavailable after tsunami or wild tsunami, fire case. 16
17. Ambulance and EMS At Life EMS Ambulance highly-trained
medical g y teams use state-of-the-art communications with back-up
systems, the latest life-saving back up systems latest, life saving
pre-hospital care equipment, and fully-staffed ambulances that are
mobile emergency rooms rooms. 17
18. Architecture (LTE Direct) ProSe Discovery over 3GPP ProSe
Communication over 3GPP Access 1.NWAssistedProximity
DiscoveryInformation UE1 3GPP Access ANDSF AAA EPC Non3GPP Access
ccess 2.ProSe 2 ProSe Discovery 3.ProSeCommunication (LTE) UE2 18
Control Plane Data Plane
19. Architecture (LTE + WLAN) ProSe Discovery over 3GPP ProSe
Communication over Non 3GPP Access Non-3GPP 1.
NWAssistedProximityDiscovery 1 NW Assisted Proximity Discovery UE1
3GPP Access ANDSF AAA EPC 2.ProSe 2 ProSe Discovery Non3GPP Access
Control Plane UE2 3.ProSeCommunication (IWLAN,trusted/un
trustedWLAN) 19 Data Plane
20. Standardization (3GPP SA1) 3GPP SA1 Proximity-based Service
(ProSe) WID First meeting in Nov. 2011 Estimated completion in
March 2013 Objective : Study use cases and identify potential
requirements for an operator network controlled discovery and
communications between devices that are in proximity. The scope
includes the following topics Commercial/social use Network
offloading Public Safety Integration of current infrastructure
services, to assure the consistency of the user experience
including reachability and mobility aspects 20
21. Standardization (3GPP RAN) Qualcomm solution 1. 1 LTE
device to device discovery Network-assisted discovery Resource
semi-statically allocated by the RAN & time synced time-synced
UEs transmit discovery signals within the discovery resources
Discovery signals encode information y g UEs decode everyone elses
signals 2. LTE device to device direct communication Separate
feature from device to device discovery Devices allowed to
communicate directly if/when make sense Shortest path for certain
types of local data exchanges Specific use case: public safety
21
22. Standardization (3GPP SA) Intel solution LTE WLAN
interworking enhancements LTE-WLAN Leverage unlicensed spectrum for
traffic offloading Opportunistic use of unlicensed spect u for D2D
Oppo tu st c o u ce sed spectrum o communication Leverage
unlicensed spectrum to support new use cases F th enhancements for
diverse data applications Further h t f di d t li ti Improve
network efficiency and UE power efficiency RAN improvements to
handle different QoE requirements Improvement on end-user
experience, especially during network congestion Targeted for
mobile video which is projected to be the dominant mobile data
traffic in the next few years 22
23. Standardization (3GPP SA) Intel solution Opportunistic Use
of Unlicensed Spectrum for D2D Local Traffic D2D on LTE licensed
spectrum (p (possible use cases: p public safety, y, offloading,
social networking) D2D on unlicensed spectrum (possible use cases:
offloading, social networking) 23
24. Standardization (IEEE 802) IEEE 802.11 Infrastructure
Service Discovery (ISD) Study Group First meeting in Jan 2012
Participants: RIM, Motorola Mobility, Huawei, Nokia, Renesas,
InterDigital, ETRI, etc InterDigital ETRI etc. Objective : Address
the problem of how a station discovers the availability of services
within the network from another station. IEEE 802 15 8 Peer Aware
Communication (PAC) Task 802.15.8 Group First meeting in May 2012 P
ti i Participants: LGE, NICT I t Di it l ETRI Samsung, CUNY, etc. t
LGE NICT, InterDigital, ETRI, S CUNY t Objective : Defines the PHY
and MAC specifications for PAC optimized for peer to peer and
infrastructureless communications with fully distributed
coordination coordination. 24
25. Standardization (Wi-Fi Alliance) Wi-Fi Direct (Wi-Fi P2P)
Provides Peer-to-Peer connectivity technology y gy Includes Device
Discovery, Service Discovery, Group Owner Power Saving, etc Enables
use case: wireless display, wireless audio, sync and go, content
sharing ... Program launched in Q g Q3-2010. Now, there are 1000+
product certified. According to ABI, , p g , every device will have
Wi-Fi Direct in 2014. Neighbor Awareness Networking A new task
group was formed in 2012 Provide low power discovery for mobile
device social networking and D2D discovery Enables use cases: for
example, Saturday marketing advertisement, social gaming, social
dating, social meeting in conference, etc... g, g , Technology
focuses include: Low Power Discovery (mobile device), Long range
(up to 500meters), and large scale (up to 1000 mobile devices).
Wi-Fi Direct Service A new task group was formed in June 2012
Ensure selected services interoperability: File Transfer, DLNA
based Media Stream, and g Printing Enable 3rd party application
development 25
26. Standardization (WiGig) Source : WiGig 26
27. Conclusions (1/2) Challenges for beyond 4G ProSe evolutions
WLAN and LTE radio integrations integrations, low-power-always-on
ProSe discovery, New Carrier Type (NCT) of LTE for direct
communication, and non orthogonal non-orthogonal radio design for
high performance ProSe Public Safety would be the primary driving
force for LTE D2D in Rel-12 LTE + WiFi Direct suppo ts ProSe
discovery a d co ect supports oSe d sco e y and communication t at
o y u cat o that only requires adaptations at EPC (no RAN impact)
to quickly enable ProSe via standardized 3GPP/WLAN interworking
solution Possible to be completed in Rel 12 Rel-12 LTE D2D ProSe
discovery and communications require fundamental adaptation of the
LTE physical layer (PHY) and radio. It will take several years to
complete the major change in PHY and radio in standard procedures,
and another several years for products to be available in the
market 27
28. Conclusions (2/2) III and ITRI have been actively
participating in D2D standard (ProSe) creation in 3GPP SA1 since
2012, and will follow up in RAN & SA for Rel-12 and Rel-13
(2013 2016) III and ITRI are working on a joint project on LTE +
WiFi Direct prototypes in 2013 covering network network, services
and applications We are soliciting participating from Taiwan user
equipments and chipsets industry (LTE & WiFi) W need to
coordinate our efforts b We d di ff between government and industry
to develop a leading position i D2D market i i in k
