September 2012 doc IEEE 802 15 12 0509

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Project: IEEE P 802. 15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Merged Comments to DCN 385 -02 TGD Draft] Date Submitted: [18 September 2012] Source: [Seung-Hoon Park] Company [Samsung Electronics] Address [416, Maetan-3 Dong, Yeongtong-Gu, Suwon-Si, Gyeonggi-Do, 443 -742, Korea] Voice: [+82 -10 -9349 -9845], FAX: [+82 -31 -279 -0813], E-Mail: [shannon. park@samsung. com] Re: [. ] Abstract: [Merged comments to revise TGD draft document (based on DCN 385 -02)] Purpose: [To summary and compare comments to TGD draft document] Notice: This document has been prepared to assist the IEEE P 802. 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 P 802. 15. Submission Slide 1 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Merged Comments to DCN 385 -02 TGD Draft September 18, 2012 Seung-Hoon Park Submission Slide 2 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 2. 2 Specific definitions to this standard Commenter Comments Eldad Zeira §Add “PAC Peer Aware Communication” §Discovering PD (DPD) means a PD which is doing discovery function and is not connected yet. Connected PD (CPD) means a PD which is connected to another PD. [Eldad] Suggest replacing above with the following definitions: PPD – Peered PD, a device which has been peered with another device. PSPD – Peer seeking PAC device, a device which is actively attempting to discover / be discovered by other devices in order to peer. (Note that this definition allows a PD to seek other devices while already being peered) §SG - Service Group - a collection of PDs that are members of the same service set. [Eldad] we need to define what is a service set Suhwook Kim Submission §Add “Peering: To establish a link or multiple links between PDs or among PDs for the purpose of announcing information or exchanging traffic. ” Slide 3 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. General Description Commenter Comments Eldad Zeira §This clause provides the basic framework of PDs and links. The framework serves as a prerequisite to supporting the functions of PDs and links and their interactions specified later in detail. It covers amongst others the following aspects — the architecture, components, services, the network topology used for medium access, the transmission range, the reference model used for functional partitioning, and the time base used for access scheduling, and the security paradigm used for message protection. Suhwook Kim §It covers the following aspects — the architecture, components, services, the network topology used for medium access, the transmission range, the reference model used for functional partitioning, and the time base used for access scheduling, and the security paradigm used for message protection. [Suhwook] It’s redundant §*To be re-written**. Submission Slide 4 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 1 Concepts and architecture Commenter Comments Eldad Zeira §This section describes general concepts, e. g. sects. 4. 1, 4. 5 in [1] with some of the original material moved elsewhere. [Editor’s comments] 4. 1 Concepts and architecture, and 4. 5 Topology from DCN 385 -01. Eldad suggested to merge 4. 1 and 4. 5 into single sub-clause. –Shannon will provide a clean version. § 802. 15. 8 PAC shall support a fully distributed, decentralized, data scalable, and self organized system composed of single type of PAC device to be named PAC Devices, or PDs. §Some of these devices may be able to connect on an opportunistic basis to infrastructure through means, which is out of scope for 802. 15. 8. § 802. 15. 8 -PAC shall support Oone-to-one and, one-to-many communications topology shall be supported. Submission Slide 5 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 1 Concepts and architecture Commenter Comments § This subclause presents the concepts of IEEE 802. 15. 8 and how the architectural components are related to the overall procedure. [Suhwook] It’s redundant. § 802. 15. 8 PAC shall support low data rate long distance. § PAC shall support scalable data rate to accommodate many applications such as listed in the Application Matrix (doc. #). Suhwook Kim Submission [Suhwook] It’s ambiguous. PAC supports not only low data rate long distance but also high data rate short distance, or etc. § Possibly aided by higher layers, PD shall support selective exchange of data with specific other PDs or groups of PDs §Possibly aided by higher layers, a PD shall support data transfers between itself and identified PDs or groups. <Seung-Hoon Park et. al. >, <Samsung Electronics> 6 [Suhwook] What is. Slide ‘selective’ exchange of data?

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 1 Concepts and architecture Commenter Comments § Replace “ 802. 15. 8 PAC shall support a fully distributed, decentralized, data scalable, and self organized system. ” to “ 802. 15. 8 PAC shall support a fully distributed, decentralized, and self organized system. Seung-Hoon Park Submission § “Possibly aided by higher layers, PD shall support selective exchange of data with specific other PDs or groups of PDs. ” [Shannon] Define “selective exchange of data”. § Add “IEEE 802. 15. 8 PAC shall provide discovery for peer information without peering. Peering is a function to establish single link or multiple links. Discovery without peering is beneficial by reducing redundant procedures to setup links and to exchange data among non-peer PDs. So discovery after peering shall be avoided in the efficiency aspect and novelty of 802. 15. 8. ” § Exchange of messages for the purpose of discovery alone shall be <Seung-Hoon Park et. al. >, <Samsung Electronics> Slide 7 minimized.

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 2 Components (States of devices? ) Commenter Comments Eldad Zeira §Discovering PD (DPD) means a PD which is doing discovery function and is not connected yet. Connected PD (CPD) means a PD which is connected to another PD. [Eldad] Suggest replacing above with the following definitions: PPD – Peered PD, a device which has been peered with another device. PSPD – Peer seeking PAC device, a device which is actively attempting to discover / be discovered by other devices in order to peer. (Note that this definition allows a PD to seek other devices while already being peered) §SG - Service Group - a collection of PDs that are members of the same service set. [Eldad] we need to define what is a service set Submission Slide 8 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 2 Components (States of devices? ) Commenter Suhwook Kim Seung-Hoon Park Submission Comments §Discovering PD (DPD) means a PD which is doing discovery function and is not peeredconnected yet. Peered. Connected PD (PPDCPD) means a PD which is peeredconnected to another PD within a service [group ]. Service Group (SG) means a collection of PDs which are connected by the same service set. [Suhwook] If ‘A’ PD is peered to ‘B’ PD for a service and discovering to ‘C’PD for the other service, ‘A’ PD is DPD and PPD. Therefore I suggest the category is only applied to within a service [group]. § Replace The title “Components” to “Roles”. [Shannon] There is no hierarchy within PDs. However, a PD can take a specific role according to event (e. g. peering) Slide 9 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 3 Topology Commenter Comments §An illustrative 802. 15. 8 -PAC topology is depicted in Fig. 1: Eldad Zeira §Fig. 1: 802. 15. 8 -PAC topology. Solid lines are 802. 15. 8 -PAC links. Red solid lines are one to many links. The dashed link to server is out of scope. Submission “Delete the line and Server from the figure <Seung-Hoon Park et. al. >, <Samsung Electronics> Slide 10

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 3 Topology Commenter Comments § Add a figure Seung-Hoon Park Submission Slide 11 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 4. Services Commenter Comments Eldad Zeira § 802. 15. 8 PAC shall support a PD ability to: • Discover other PDs or groups of other PD’s in proximity and be discoverable by them • Discover other PDs or groups of other PD’s in proximity but not be discoverable by them • Be discoverable by other PDs or groups of other PD’s but not discover them • Neither discover nor be discoverable • Communications with discovered PDs. Suhwook Kim • Title “Services” [Suhwook] The contents are not suitable to the title. Please change the title to such as PD ability or fill the contents to fit the title. Submission Slide 12 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 4. Services Commenter Seung-Hoon Park Submission Comments §Replace “ 802. 15. 8 PAC shall support a PD ability to: ” to “ 802. 15. 8 PAC shall provide a discovery service that user or application aware peers in the proximity. 802. 15. 8 PAC shall support a PD discovery ability to: ” § Add “ 802. 15. 8 PAC shall provide traffic services such as best effort, non real-time, streaming, gaming or etc. ” Slide 13 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 5 Reference model Commenter Comments §Modify the title to “Reference protocol model” §“Message security services are to occur at the MAC sublayer, and security key generationsoperations are to take place inside and/or outside the MAC sublayer. ” § Modify picture Eldad Zeira Fig. Xxx: Protocol Architecture. Grayed out boxes signify layers and nodes not specified by 15. 8. Dotted lines signify an intermittent connection Submission Slide 14 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 4. 5 Reference model Commenter Comments Suhwook Kim §“All PDs are internally partitioned into a physical (PHY) layer and a medium access control (MAC) sublayer of the data link layer, ” [Suhwook] Why PHY layer and MAC sublayer? Submission Slide 15 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 6. Functional requirements Commenter Suhwook Kim Submission Comments §This cause contains system level functional requirements targeting peak spectral efficiency, latency, synchronization time, discovery capacity, scheduling, Qo. S, interference management, power management, system complexity, security. Slide 16 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 6. 1 Multiple access Commenter Eldad Zeira Comments §The multiple access schemes shall be designed as follows: . Contention-free access scheme, contentionbased, or other access scheme may be considered for control and data transmission. §Multiple access schemes shall be supported. §[Eldad] Since any multiple access is either contentionbased or contention-free I suggest replace with a simpler statement: Suhwook Kim Submission §The multiple access schemes shall be designed as follows: Contention-free access scheme, contention-based, or other access scheme may be considered for control and data transmission. [Suhwook] ‘Shall’ PAC support both of them? § 802. 15. 8 PAC shall support prioritized channel access. [Suhwook] What’s the prioritized channel access? Slide 17 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 6. 2 Synchronization Commenter Eldad Zeira Suhwook Kim Seung-Hoon Park Submission Comments §Remove this sub-clause §It’s not decided which the system supports synchronization or not. § Leave this sub-clause. [Shannon] a minimum of synchronization functionality is required for data transmission/reception or ranging. § Add “A transmitting PD and a receiving PD shall be synchronized to support low duty cycling. ” §[Shannon] Link-level synchronization to Tx-Rx pair shall be provided for low power consumption. §Add “A multiple of proximal PDs shall be synchronized for efficient channel access. ” [Shannon] System-level synchronization shall be provided to get higher throughput from synchronous channel access mechanism than one from asynchronous channel access mechanism. Slide 18 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 6. 3 Discovery Commenter Comments Suhwook Kim §IEEE 802. 15. 8 shall support that PD finish the discovery of other PDs [within the same service] before peering. 802. 15. 8 PAC shall support data discovery latency to xxx ms Possibly aided by higher layers, 802. 15. 8 PAC shall support selective discovery and discoverability by specific other PDs or groups of PDs. [Suhwook] groups of PDs It’s ambiguous. Seung-Hoon Park § Replace the title “Discovery (PD discovery or Peer discovery)” to “Peer discovery” [Shannon] The “Peer” information can include • Application, service, user (nick)name • PAC Device type, and capability Submission Slide 19 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 6. 4 Peering (Link establishment, or association) Commenter Comments § “ 802. 15. 8 PAC shall support a quick peering between Suhwook Kim Seung-Hoon Park Submission PDs that have already discovered each other. ” [Suhwook] Do we support peering without discovering? § Replace the title “Peering (Link establishment, or association)” to “Peering” § “ 802. 15. 8 PAC shall support a quick peering between PDs that have already discoveredpeered each other. ” Slide 20 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 6. 8 Multicast and 6. 9 Broadcast Commenter Eldad Zeira Submission Comments §[Eldad] isn't it covered under one to many? Slide 21 <Seung-Hoon Park et. al. >, <Samsung Electronics>

<September 2012> doc. : IEEE 802. 15 -12 -0509 -00 -0008 Comments to 6. 10 Multi-hop support Commenter Comments Seung-Hoon Park § Add “Only relay-enabled PD decided by peer information shall relay discovery messages or traffic data from PDs in the proximity. ” [Shannon] Only users in the same peer group can support relaying. How selfish user helps relaying for different group users? So it shall be decided by peer information. Submission Slide 22 <Seung-Hoon Park et. al. >, <Samsung Electronics>