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

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [ IG 6tisch Opening Report for Jan 2014 Session ] Date Submitted: [ 19 Jan 2014 ] Source: [ Patrick Kinney ] Company [ Kinney Consulting LLC ] Address [ Chicago area, IL, USA ]

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

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title:[IG 6tisch Opening Report for Jan 2014 Session] Date Submitted: [19 Jan 2014] Source: [Patrick Kinney] Company [Kinney Consulting LLC] Address [Chicago area, IL, USA] Voice:[+1.847.960.3715], E-Mail:[pat.kinney@ieee.org] Re:[IG 6tischOpening Report for January2014 Session.] Abstract: [Opening Report for the Jan Session] 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. <Pat Kinney>, <Kinney Consulting LLC>

  2. Meeting Goals (Agenda 15-14-0012-00) • SC Maintenance • Wednesday 19 Mar, PM2: Review of IETF 6TiSCH calls and IETF 89 session • Thursday 20 Mar, PM2: Putting an architecture together of 6tisch, CoAP, Geolink, RPL, 6lowpan, etc Slide 2 <Pat Kinney>, <Kinney Consulting LLC>

  3. IETF 6tisch March 2014 Meeting Report 6tisch Goal The 6tisch Working Group is focused upon enabling IPv6 over the TSCH mode of the IEEE802.15.4e standard. The extent of the problem space for the WG is one or more Low Power and Lossy Networks (LLNs), eventually federated through a common backbone link via one or more LLN Border Routers (LBRs). Work Item 1 Produce "6TiSCH architecture" to describe the design of 6TiSCH networks. This document will highlight the different architectural blocks and signaling flows, including the operation of the network in the presence of multiple LBRs. Initially, the document will focus on distributed routing operation over a static TSCH schedule. Work Item 2 Produce an Information Model containing the management requirements of a 6TiSCH node. This includes describing how an entity can manage the TSCH schedule on a 6TiSCH node, and query timeslot information from that node. A data model mapping for an existing protocol (such as Concise Binary Object Representation (CBOR) over the Constrained Application Protocol (CoAP)) will be provided. Work Item 3 Produce "Minimal 6TiSCH Configuration" defining how to build a 6TiSCH network using the Routing Protocol for LLNs (RPL) and a static TSCH schedule. It is expected that RPL and the Objective Function 0 (OF0) will be reused as-is. Slide 3 <Pat Kinney>, <Kinney Consulting LLC>

  4. Architecture status & changes since IETF 88 • Incorporated text on 6top vs. RPL (section 7.2) • Objective Function can leverage 6top databases • abstract neighbor table with stats • cell quality metrics  (RSSI, LQI) • ASN of last received packet • RPL can also influence MAC behavior • Extended Beacons period • 6top provides a broadcast channel for DIO • Added text on chunk management (section 7.6) • To support the distribution of timeslot allocation. • Optional. E.g. not used in minimal • Operates for a whole group of cells at a time • Well-known partition on the CUD matrix • Used to obtain exclusive authority within interference domain • Different from Bundle that is a dynamic collection used for transmit • Mechanism for appropriation still TBD • Done by RPL parents only • Expectation: similar to DAD • New terms e.g. Channel Distribution/Usage matrix Slide 4 <Pat Kinney>, <Kinney Consulting LLC>

  5. 6top sublayer and 6top interface status • 6top Interface: • Defines a generic data model for the 6TiSCH Operation Sublayer (6top), using the YANG data modeling language. • This data model gives access to metrics (e.g. cell state), TSCH configuration and control procedures, and support for the different scheduling mechanisms • This data model can be used for future network management solutions defined by the 6TiSCH working group. • The 6top interface draft proposal, adopted by the work group. defines a generic data model for the 6TiSCH Operation Sublayer (6top), using the YANG data modeling language. • 6top sublayer changes since IETF 88: • Flags for Cells • Remove section 3 “Using 6top” and re-organize the contents • Modify commands’ parameters for consistent with data model. • Add “Chunk commands” and “Chunk-cell commands”. • Remove security related commands • Detail the interaction with IEEE802.15.4e TSCH Slide 5 <Pat Kinney>, <Kinney Consulting LLC>

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