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: Maintaining RSLN enabled PAN Date Submitted: 14 March, 2012 Source: Seong-Soon Joo, Jong-Arm Jun, Nae-Soo Kim, Cheol-Sig Pyo Company: ETRI Address: 161 Gajeong-dong, Yuseong-gu, Daejeon, KOREA Voice: +82-42-860-6333, FAX: +82-42-860-4197, E-Mail: ssjoo@etri.re.kr Re: Abstract: As an initial draft for the LECIM MAC, to extend the networking coverage of a star network, maintaining the Relayed Slot-Link Network (RSLN) enabeld PAN is described. Purpose: Initial draft for the LECIM MAC 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.

2. Maintaining RSLN enabled PAN Seong-Soon Joo*, Jong-Arm Jun, Nae-Soo Kim, Cheol-Sig Pyo ETRI

3. Maintenance of RSLN enabled PAN (I) • maintenance features • maintain time synchronization • maintain repeaters on the path • maintain end points • maintain time synchronization • originating source of time information comes from the PAN coordinator • keep phasing between inner and outer coordinator’s time • measure the off-phase by regressing the difference between the estimated time of event and the occurred time of event • time-stamping for measuring the clock drift rate • compensate clock drift periodically

4. Maintenance of RSLN enabled PAN (II) • maintain relaying path • status on the path • link quality: inward, outward • depth of relaying, repeater information on the path • status of the repeater • load status: how many end-points are connected • status of the device • check in-service • power management • control the transmission power

5. RSLN Synchronization • time synchronization • synchronize with the global time source • phase to the inner coordinator cyclic-superframe beacon • use the first time-stamp infor in any of frames from the inner coordinator • compensate clock drift • measure the off-phase • explicit time information : time-stamp in beacon or management frame • implicit time information : ACK time-stamp • regress the clock drifting & update clock

6. Relaying Path Management (I) • components of path management • device • address • device type : PAN coordinator, repeater, end-point • position on the path : relaying tier identifier, inward connected device, outward connected device • link • connection infor • inside device infor: address, relaying tier identifier, device type, inside device’s cyclic-superframe beacon index • outside device infor: address, relaying tier identifier, device type, outside device’s cyclic-superframe beacon index • link quality • inward link quality • outward link quality • path • list of repeater • list of end points • status • propagation delay, traffic

7. Relaying Path Management (II) • one-hop link management • connection infor • link quality • beacon bitmap • list of active bidirectional device slots • power management • end-to-end path management • check active end points • propagation delay

8. Relaying Path Management (III) • slot access for exchanging management infor • broadcasting • coordinator slot • outward only • 1-to-1 • bidirectional device slot • inward or outward • one-hop link management or end-to-end path management • management primitives & commands • information vs control • one-hop vs end-to-end

9. RSLN Management Primitives (I) • MLME-RSLN-MANAGEMENT.request • ManagementType: time sych, link infor, path infor, power management • DstAddrMode, DstAddr Table – MLME-RSLN-MANAGEMENT.request parameters

10. RSLN Management Primitives (II) • MLME-RSLN-MANAGEMENT.response • ManagementType • SrcAddr • time synch infor • link descriptor • path descriptor • power management descriptor

11. RSLN Management Primitives (III) • Link Descriptor • Path Descriptor • TBD • Power Management Descriptor • TBD

12. RSLN Management Commands (I) • RSLN Management request Figure xx-RSLN-Management request command format

13. RSLN Management Commands (II) • RSLN Management response Figure xx-RSLN-Management response command format

14. Thanks for your Attention! ssjoo@etri.re.kr