標準現況 :Proximity Communication 羅耿介研究員

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1 標準現況 :Proximity Communication 財團法人資訊工業策進會 羅耿介研究員 1

2 Outline Introduction Use Cases Commercial Public Safety Architecture LTE Direct LTE + WLAN Standardization 3GPP IEEE Wi-Fi Alliance WiGig Conclusions 2

3 Beyond 4G 無線網路技術演進新方向 3

4 Why D2D? Wireless Technology is at a turning point 2G 3G 4G & Beyond Efficiency Network Efficiency CDMA AMC+HARQ OFDM+MIMO OFDM+MIMO CoMP/eICIC Heterogeneous Networks Spectral 4 Source: Intel 4

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 WLAN D2D (E.g. WiFi Direct, Bluetooth, NFC) Source: Intel Network Assisted or Network Controlled WAN + WLAN D2D (E.g. LTE + WiFi Direct) 6 Network Integrated and Heterogeneous Network WAN D2D (E.g. 3GPP LTE D2D)

7 D2D technology components Applications Innovations Device/User/Service e Discovery & Communications Challenges D2D Connectivity Co-existence Source: Intel 7

8 D2D Applications What do we have now? Data 照片與檔案分 Share texts, t photos, video 享 遊戲 clips Ex. Color, Tooth Tag, Alljoyn Find shops Ex. Fouresquare Radar, Twitter Discover Tab, Voice NearVerse LoKast, VoIP 語音通訊 Google MAP What will we have in the future? Enhanced social networking Enhanced mobile advertisement Home automation Public Safety Source: IEK Video 影片分享 線上觀看 Text 網誌 即時訊息 8

9 D2D Applications Attributes Evolution of LBS Proximity-based it Service (ProSe) APP discovery and communication without GPS or centralized servers. Timely, Direct, Enhanced User Experience 9

10 Use Cases - Restricted Discovery Restricted discovery describes a basic scenario for ProSe discovery. Mary and John are friends John s ProSe-enabled UE Proximity it Mary s ProSe-enabled UE Mary and Susan are not friends Susan s ProSe-enabled UE 10

11 Use Case - Open Discovery Open discovery describes a case in which an UE discover another UE without permission by the discoverable UE. Advertisement Interactive discovery Digital Signage 11

12 Use Case Service Continuity This use case depicts service continuity between the network infrastructure and the direct communication path. Core Network Core Network Control + Data Control + Data Control Control Data 12

13 Use Case - Offloading Offload much traffic load to the locally shared communication, such as wifi, femto, 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. 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 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 14

15 Disaster Scenarios Ron Agam Getty Images 15

16 Fire and Rescue services Firefighters communicate with each other even under no network coverage, for example, network is unavailable after tsunami, or wild fire case. 16

17 Ambulance and EMS At Life EMS Ambulance highly-trained medical teams use state-of-the-art communications with back-up systems, the latest, life-saving pre-hospital care equipment, and fully-staffed ambulances that are mobile emergency rooms. 17

18 Architecture (LTE Direct) ProSe Discovery over 3GPP ProSe Communication over 3GPP Access 1. NW Assisted Proximity Discovery Information UE 1 3GPP Access ANDSF AAA Non- 3GPP 2. ProSe Access Discovery 3. ProSe Communication (LTE) EPC Control Plane Data Plane UE 2 18

19 Architecture (LTE + WLAN) ProSe Discovery over 3GPP ProSe Communication over Non-3GPP Access 1. NW Assisted Proximity Discovery UE 1 3GPP Access ANDSF AAA 2. ProSe Discovery Non- 3GPP Access EPC UE 2 3. ProSe Communication (I WLAN, trusted/untrusted WLAN) Control Plane Data Plane 19

20 3GPP Standardization (3GPP SA1) SA1 Proximity-based Service (ProSe) WID First meeting in Nov 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. LTE device to device discovery Network-assisted discovery Resource semi-statically allocated by the RAN &time-synced UEs transmit discovery signals within the discovery resources Discovery signals encode information UEs decode everyone else s 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 Leverage unlicensed spectrum for traffic offloading Opportunistic use of unlicensed spectrum for D2D communication Leverage unlicensed spectrum to support new use cases Further enhancements for diverse data applications 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 Intel solution Standardization (3GPP SA) Opportunistic Use of Unlicensed Spectrum for D2D Local Traffic D2D on LTE licensed spectrum (possible use cases: public safety, offloading, social networking) D2D on unlicensed spectrum (possible use cases: offloading, social networking) 23

24 Standardization (IEEE 802) IEEE Infrastructure Service Discovery (ISD) Study Group First meeting in Jan 2012 Participants: RIM, Motorola Mobility, Huawei, Nokia, Renesas, InterDigital, ETRI, etc. Objective : Address the problem of how a station discovers the availability of services within the network from another station. IEEE Peer Aware Communication (PAC) Task Group First meeting in May 2012 Participants: i t LGE, NICT, InterDigital, it ETRI, Samsung, CUNY, etc. Objective : Defines the PHY and MAC specifications for PAC optimized for peer to peer and infrastructureless communications with fully distributed coordination. 24

25 Standardization (Wi-Fi Alliance) Wi-Fi Direct (Wi-Fi P2P) Provides Peer-to-Peer connectivity technology 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 Now, there are product certified. According to ABI, every device will have Wi-Fi Direct in 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... 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 Printing Enable 3rd party application development 25

26 Standardization (WiGig) 26 Source : WiGig

27 Conclusions (1/2) Challenges for beyond 4G ProSe evolutions WLAN and LTE radio integrations, low-power-always-on ProSe discovery, New Carrier Type (NCT) of LTE for direct communication, and non-orthogonal orthogonal radio design for high performance ProSe Public Safety would be the primary driving force for LTE D2D in Rel-12 LTE + WiFi Direct supports ProSe discovery and communication 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 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 ( ) III and ITRI are working on a joint project on LTE + WiFi Direct prototypes in 2013 covering network, services and applications We are soliciting participating from Taiwan user equipments and chipsets industry (LTE & WiFi) We need to coordinate our efforts between government and industry to develop a leading position ii in D2D market

29 Thank You 29