Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title:Application and Expected Technical Attributes in PAC Date Submitted: May 2012 Source:Jinyoung Chun , Jinsoo Choi, Suhwook Kim, Jinsam Kwak (LG Electronics) Address: LG R&D Complex 533, Hogye-1dong, Dongan-gu, Anyang-shi, Kyungki-do, Korea Voice: +82-31-450-1918, FAX: +82-31-450-4049, E-Mail: jiny.chun@lge.com Re: “15-12-0202-00-0008 IEEE P802.15 TG8 (Peer Aware Communications) Call For Applications” Abstract: Application and Requirement of PAC Purpose: Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Slide 1

2. TG8 PAC • PAR review: Scope • This standard defines PHY and MAC mechanism for Wireless Personal Area Networks (WPAN) Peer Aware Communications (PAC) optimized for peer to peer and infrastructureless communications with fully distributed coordination. PAC features include: • Discovery for peer information without association • Discovery signaling rate, typically 100 kbps • The number of devices in the discovery • Scalable data transmission rates, typically 10 Mbps • Group communications with simultaneous membership in multiple groups, typically up to 10 • Relative positioning • Multi-hop relay • Security • Operational in selected globally available unlicensed/licensed bands below 11 GHz capable of supporting these requirements Slide 2

3. Application – Social Networking • Technical attributes • Discovery mechanism for peers in vicinity w/o association for fast/dynamic link set up • Based on information of proximal profile, user ID, previous connection/log, etc • PHY design for sufficient number of peers to be hearable and low overhead for discovery signaling • Joint utilization b/w discovery signaling and relative positioning could be a candidate to reduce consumed power with minimized overhead • Group communication based on registered/profiled users • Reduce the time for user-paring and overhead for security Friends Informing sales in vicinity Local group chatting / messaging Food Truck Slide 3

4. Application - Advertisement • Technical attributes • Peer discovery and relative positioning for peers who are approaching to advertisement device • Signaling design to be noticeable at acceptable power level (relative distance) and transmission rate (statistical population degree) • Broadcasting to whole users or selected advertising based on user information (e.g. pre-registered preference, age) Automatic advertisement or guide Slide 4

5. Application - User-centric Service • Technical attributes • Dynamic peer discovery and user-paring in aspect of each user’s envision • For pure user-centric service, peer discovery and user paring can be applied per user’s aspect (e.g. in above left figure, whole users involved in same game don’t have to be paired at the same time but dynamically paired based on scenarios) • Multiple group communications and fast/dynamic group change • Suitable grouping and seamless regrouping for different users and user-centric services PAC link PAC link Gaming / Personal DJ Slide 5

6. Application - Consumer Electronics • Technical attributes • Group communication based on registered/profiled information • Automatic control/device sync-up of group devices according to action or request from one electronics (e.g. group delegator which has a role of triggering) • Data transferring for content sharing without a complex management procedure Auto-control/device sync-up and easy content sharing Slide 6

7. Application - Emergency Service & Alarm • Technical attributes • Fast relative positioning for indicating emergency / bad traffic status and accident alarm • Rather than power requirement issue, more than considering fast activity and accurate information (e.g. high power signaling with boosting, lowest MCS, dedicated resource) • Group communication to share the disaster or power down situation • One or several group delegator can delegate the role of informing status within a group or devices in vicinity (any one can be or set some specific device with power supply) Disaster control and congestion/accident alarm service Slide 7

8. Technical Attributes vs. Application Slide 8

9. Consideration on Operating Band • Unlicensed band • New PHY/MAC design is possible but needs to compete with existing many other networks for medium access • Especially, it is difficult to guarantee the reliable transmission of some control/management signals with high priority (e.g. peer discovery, paging for user-paring, emergency/disaster alarm) • Licensed band • By band sharing with other network, infrastructurelessdesign is very difficult without any impact on scheduling of existing network • Without band sharing, a dedicated frequency band should be assigned (Big cost) Slide 9

10. Consideration on Operating Band (cont’d) • Needs for co-operation b/w unlicensed and licensed band • Co-operating band utilization may be required • To minimize the implementation complexity and cost, we could divide the band operation of each signal based on some criteria such as the priority of signal, traffic type, required overhead, latency issue, etc. For example, • High priority is required but cause low overhead (e.g. peer discovery signal, paging signal for user-pairing, emergency/disaster alarm indication): Operating in License band with guaranteed time slots • Low priority is required but need high overhead (e.g. data transmission): Operating in Unlicensed band with competition • Challenges • In PAC aspect: Fast channel switching mechanism, signaling design to control transmission across two different type of bands • In existing other network with infrastructure: Need to some reserved time slots for PAC communication with minimized resource overhead Slide 10

11. Reference [1] 15-12-0046r1, “PAC Introduction” [2] 15-11-0743r1, “Use Cases for Peer Aware Communications (Sub 3 GHz)” Slide 11