doc.: IEEE 802.15-<doc#> <month year> doc.: IEEE 802.15-<doc#> March 2012 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Comments and Responses on IEEE 802.15 PAC] Date Submitted: [15 March 2012] Source: Myung Lee7 Company [Samsung Electronics ]1, [ETRI]2, [LG]3, [Huawei]4, [NICT]5, [CSEM]6 , [CUNY]7 Address [] Voice:[], FAX: [], E-Mail:[shannon.park@samsung.com]1, [jkkim@etri.re.kr]2, [suhwook.kim@lge.com]3, [betty.zhao@huawei.com]4, [lee@nict.go.jp]5, [john.farserotu@csem.ch]6, [lee@ccny.cuny.edu]7 Re: [.] Abstract: [Comments and Responses on IEEE 802.15 PAC] Purpose: [To present comments and responses on IEEE 802.15 PAC] 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. Myung Lee (CUNY) <author>, <company>

About Coexistence Assurance Document March 2012 Comments No. Commentor Comments 1 WG11 IEEE 802.11-12/0368r1 2 Steve Shellhammer About Coexistence Assurance Document 3 Adrian Stevens About PAR sub clause 5.5 Myung Lee (CUNY)

March 2012 doc.: IEEE 802.11-12/0368r1 March 2012 Comments from WG11 4.3 consider submission date to RevCom being at least Oct 2015, but March 2016 may be more realistic. 5.2: change “defines the PHY” to “defines PHY”, change “specification” to “mechanism” 5.4: break into succinct sentences 5.5: Listed in Need, but not in Scope: “proximity awareness, Signaling overhead reduction”….things in the Need statement should probably be in the Scope statement if planning to meet the need. 5.6 Change “Content/Internet” to two separate lines 8.1 these paragraphs do not really add to the PAR delete them or move to 5C. http://ieee802.org/PARs/2012-03/15-12-0063-01-0pac-pac-par.pdf Myung Lee (CUNY) Jon Rosdahl, (CSR)

Proposed replacement for Scope statement (from WG11) March 2012 doc.: IEEE 802.11-12/0368r1 March 2012 Proposed replacement for Scope statement (from WG11) This standard defines PHY and MAC mechanisms for Wireless Personal Area Networks (WPAN) Peer Aware Communications (PAC) that are optimized for peer to peer and infrastructureless communications with fully distributed coordination. PAC features will include: discovery for peer information without association; discovery signaling rate of greater than 100 kbps; discovery of the number of devices in the network; scalable data transmission rates up to 10 Mbps; group associations with simultaneous membership in up to 10 groups; relative positioning; multihop relay; security; proximity aware; signaling overhead reduction; and operational in selected globally available unlicensed/licensed bands below 11 GHz capable of supporting these requirements. This is the scope statement being broke out to look at the feature list that was to be included. This is not what is expected to be the final Scope, but we ran out of time, and this is the work in progress. Myung Lee (CUNY) Jon Rosdahl, (CSR)

Comments from WG11 (1) Comment Response March 2012 Comments from WG11 (1) Comment 4.3 consider submission date to RevCom being at least Oct 2015, but March 2016 may be more realistic. Response Accepted Myung Lee (CUNY)

Comments from WG11 (2) Comment Response March 2012 Comments from WG11 (2) Comment 5.2: change “defines the PHY” to “defines PHY”, change “specification” to “mechanism” Response Accepted Myung Lee (CUNY)

Comments from WG11 (3) Comment Response March 2012 Comments from WG11 (3) Comment 5.4: break into succinct sentences Response Replace “The purpose is to provide an international standard for scalable, low power, and highly reliable wireless communications for emerging services such as social networking, advertising, gaming, streaming, and emergency services, enabled by peer to peer and infrastructureless peer aware communications with fully distributed coordination. Existing standards may be able to provide parts of the envisioned PAC services, but no single standard provides infrastructureless peer-aware communications with fully distributed coordination.” with “The purpose is to provide a global standard for scalable, low power, and highly reliable wireless communications for emerging services such as social networking, advertising, gaming, streaming, and emergency services. Existing standards may be able to provide parts of the envisioned PAC services, but no single standard provides infrastructureless peer-aware communications with fully distributed coordination.” Myung Lee (CUNY)

Comments from WG11 (4) Comment Response March 2012 Comments from WG11 (4) Comment 5.5: Listed in Need, but not in Scope: “proximity awareness, Signaling overhead reduction”….things in the Need statement should probably be in the Scope statement if planning to meet the need. Response We replaced “with the awareness of their proximity for future wireless communications.” with “with the awareness of their relative positioning.” in the PAR sub clause 5.5 Myung Lee (CUNY)

Comments from WG11 (5) Comment Response March 2012 Comments from WG11 (5) Comment 5.6 Change “Content/Internet” to two separate lines Response Accepted. We replaced “-Content/Internet service providers” with “ – Content providers – Internet service providers ” Myung Lee (CUNY)

Comments from WG11 (6) Comment Response March 2012 Comments from WG11 (6) Comment 8.1 these paragraphs do not really add to the PAR delete them or move to 5C. Response Deleted “Note for section 5.2 Scope: It is possible that this standard will use more than one band to meet the features of PAC.” Myung Lee (CUNY)

Comments from WG11 (7) Proposed replacement for Scope Response March 2012 Comments from WG11 (7) Proposed replacement for Scope This standard defines PHY and MAC mechanisms for Wireless Personal Area Networks (WPAN) Peer Aware Communications (PAC) that are optimized for peer to peer and infrastructureless communications with fully distributed coordination. Response Accepted. Myung Lee (CUNY)

Comments from WG11 (8) March 2012 Proposed replacement for Scope PAC features will include: discovery for peer information without association; discovery signaling rate of greater than 100 kbps; discovery of the number of devices in the network; scalable data transmission rates up to 10 Mbps; group associations with simultaneous membership in up to 10 groups; relative positioning; multihop relay; security; proximity aware; signaling overhead reduction; and operational in selected globally available unlicensed/licensed bands below 11 GHz capable of supporting these requirements. Response Modified text PAC features include: discovery for peer information without association, discovery signaling rates, 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, multihop relay, security, and operational in selected globally available unlicensed/licensed bands below 11 GHz capable of supporting these requirements. Myung Lee (CUNY)

Comments from Steve Shellhammer March 2012 Comments from Steve Shellhammer Comment The 802.15.8 5C says "A coexistence assurance document will be submitted to the 802.19 TAG."  Actually, 802.19 is now a WG.  However, the CA document is not just supplied to 802.19, but is made available to everyone in the WG letter ballot.               Maybe this could be changed to read more like the other 5C documents.  For example, I would suggest you replace the above sentence with “The WG will create a Coexistence Assurance document as part of the WG balloting process.” Response Accepted Replaced “A coexistence assurance document will be submitted to the 802.19 TAG.” with “PAC will create a Coexistence Assurance document as part of the WG balloting process.” in 5C Sub clause 4 d) Myung Lee (CUNY)

Comments from Adrian Stevens March 2012 Comments from Adrian Stevens Comment 5.5: "Current communication infrastructure can support those applications but incurs unbearable signaling overhead and communication latency when used to support hundreds of devices in the proximity." (a) I would like to see supporting evidence for this statement. Can you point me to some? (b) Can you point me to submissions that show that a technology has been identified (at least in concept) that doesn't suffer "unbearable signaling overhead". Response Replaced “Current communication infrastructure can support those applications but incurs unbearable signaling overhead and communication latency when used to support hundreds of devices in the proximity.” with “While the current communication infrastructure can support the noted applications to some degree, PAC's goal is to allow the network to support hundreds of devices by reducing signaling overhead.” Myung Lee (CUNY)

[Backup] Comments from Adrian Stevens March 2012 [Backup] Comments from Adrian Stevens Comment: 5.5: "Current communication infrastructure can support those applications but incurs unbearable signaling overhead and communication latency when used to support hundreds of devices in the proximity." (a) I would like to see supporting evidence for this statement. Can you point me to some? (b) Can you point me to submissions that show that a technology has been identified (at least in concept) that doesn't suffer "unbearable signaling overhead". Response to (a) Infrastructure based communication system like WiFi involves unavoidable handshake procedures between AP and STA to provide its service. Conventional WiFi service procedure needs tens of steps including AP detection, Network discovery, Association & authentication, and IP-address assignment [1]. And location service will introduce another positioning latency up to 10sec and overhead from signaling to location server to update and retrieve accurate location information [2] [3]. If hundreds of devices join the service to match peers in proximity, wireless infrastructure and location server might not handle properly due to exponentially increased messages upto O(N2). And GPS assisted method also has problem with power consumption and poor service quality in an indoor environment. When users locate in places where infrastructure is not well equipped, location service cannot be provided. Myung Lee (CUNY)

[Backup] Comments from Adrian Stevens March 2012 [Backup] Comments from Adrian Stevens Comment: 5.5: "Current communication infrastructure can support those applications but incurs unbearable signaling overhead and communication latency when used to support hundreds of devices in the proximity." (a) I would like to see supporting evidence for this statement. Can you point me to some? (b) Can you point me to submissions that show that a technology has been identified (at least in concept) that doesn't suffer "unbearable signaling overhead". Response to (b) PAC group intends to develop a peer-to-peer (P2P) communication system which is characterized as an infrastructureless, scalable, and proximity based technology.  In the due time of PAC activities, various technical approaches will be presented to substantially lessen the signaling overhead and latency problem. Some potential approaches may include the simplification of necessary steps in neighbor discovery and association, optimization for adaptive channel probing and modulation[4][5], and relative positioning without centralized location server. Also, some technical approaches reported in [6] may serve to indicate the feasibility of PAC component technologies to be developed. Myung Lee (CUNY)

[Backup] Comments from Adrian Stevens March 2012 [Backup] Comments from Adrian Stevens [1] “Requirements for FILS Submissions coming from PAR & 5C”, IEEE802 DCN11-11-0119-00-00 [2] “Person Wide Web: Active Location based Web Service Architecture using Wireless infrastructure”,Seungjae Shin et.al. KAIST [3] “Mobile Positioning Technologies in Cellular Networks: An Evaluation of their Performance Metric”, Isaac K Adusei et.al. Hannover Univ. [4] “An Empirical Analysis of the IEEE 802.11 MAC Layer Handoff Process,” ACM SIGCOMM Computer Communications Review, Vol. 33, No. 2 [5] “Low Latency in Wireless Communications,” publik.tuwien.ac.at/files/PubDat_204293.pdf [6] FlashlinQ: A Synchronous Distributed Scheduler for Peer-to-Peer Ad hoc Networks, IEEE Wireless Communication Magazine, Dec. 2010 Myung Lee (CUNY)