1. doc.: IEEE 802.15- Submission, Slide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Consistent, Standardized Methods for Wireless Device Operations Applicable to Multiple PHYs] Date Submitted: [11 March 2015] Source: [Pat Kinney] Company [Kinney Consulting] Address [251 Clair View Ct, Lake Zurich, IL] Voice:[847-960-3715], FAX: [], E-Mail:[pat.kinney@kinneyconsultingllc.com] Re: [In response to the call for presentations from WNG Chair] Abstract:[Typical device behaviors that should be commonly addressed] Purpose:[Case for expanding scope of TG4r PAR] 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. doc.: IEEE 802.15- Submission, Slide 2 Consistent, Standardized Methods for Wireless Device Operations Applicable to Multiple PHYs Case for expanding the scope of TG4r’s PAR

3. doc.: IEEE 802.15- Submission Historical Perspective IEEE Std. 802.15.4 has been amended many times with minimal PHY changes necessary to address new markets or market changes Typically, each PHY amendment added only those MAC changes necessary to implement that PHY, in other words it seldom anticipated making those MAC changes applicable to other PHYs, Slide 3

4. doc.: IEEE 802.15- Submission Historical Perspective (cont’d) The current IEEE Std. 802.15.4 is now confusing to the reader as to which MAC operations are compatible with which PHYs Need exists for consistent, standardized methods to apply specific MAC operations to all or almost all PHYs –This would allow the high layer to specify the MAC automatic operation, e.g. a default?, Slide 4

5. doc.: IEEE 802.15- Submission, Slide 5 TG4r PAR Scope This amendment integrates wireless ranging techniques and technologies, including those existing within IEEE 802.15.4 and new to IEEE 802.15.4, into a consistent, standardized method addressing the needs of a wide range of applications and PHYs and enabling the interoperability of devices by different vendors using this method. Additionally, the amendment defines necessary MAC and PHY extensions which enable common radio based distance measurements.

6. doc.: IEEE 802.15- Submission Other Modes/Operations with Similar Needs Dynamic Data Rate Selection Dynamic Transmit Power Selection Asymmetric Link Operation Channel Hopping Operation Dynamic Channel Selection Dynamic Preamble Selection Dynamic Modulation Selection Others?, Slide 6

7. doc.: IEEE 802.15- Submission Dynamic Data Rate (DDR) Selection Many PHYs have multiple data rates Data rates are currently specified by a higher layer but often data rates could be better set by the MAC on a link-by-link basis To allow MAC to set the data rate, would need to: –Define an automatic data rate determination algorithm –Define common methods for MAC to select specific PHY data rates, FEC, PHY preambles, etc. Since the MAC already knows whether frames have been dropped DDR selection would allow the MAC to understand the timing parameters, Slide 7

8. doc.: IEEE 802.15- Submission Dynamic Transmit Power Levels (DTPL) Many PHYs have defined multiple transmit power levels Transmit power levels are currently specified by a higher layer but often these levels could be better set by the MAC on a link-by-link basis To allow MAC to set the transmit power level it may need to: –Determine the CSMA impact (note: GTS or TSCH operation would have no affect) –Define a default automatic power level determination algorithm with option to download another –Define common methods for MAC to select specific PHY power levels based upon PHY preambles, PHY FEC, signal strength, failed packets, etc. –Tell the device on the other side of the link what it’s contemplating, Slide 8

9. doc.: IEEE 802.15- Submission Asymmetric Link Operation Asymmetric Link Operation (ALO) is preferred for some networks with many end devices, as it allows the end devices to operate at low energy levels, etc. Example applications include shelf tags, etc. Optimized network operation for high performance device (HPD) along with low performance devices (LPDs) HPDs acting as coordinators enable lower cost LPDs to reduce energy consumption MAC ALO would free the higher layer from having to set up a network with HPDs and LPDs., Slide 9

10. doc.: IEEE 802.15- Submission Channel Hopping Operation Channel Hopping is preferred for some networks operating in interference prone environments. Example applications include smart grid and industrial Channel hopping networks require a: –known hop sequence –a channel white list and a channel black list –a method to alter hop sequence on-the-fly –a method to synchronize, –a known clock (network wide? local area only?) MAC channel hopping would not require the higher layers to understand radio operation, Slide 10

11. doc.: IEEE 802.15- Submission Backward Compatibility Add a new primitive parameter to the primitives e.g. Auto-DDR, Auto-DTPL, Auto- CH, Auto-ALO Older devices would continue to use the current methods, i.e. over-ride the automatic mode Setting Auto-xxx to TRUE would tell the MAC to ignore the legacy values, Slide 11

12. doc.: IEEE 802.15- Submission Going Forward Repurpose TG-4r by amending its PAR and CSD (PAR is already MAC/PHY) Set up teams to address each area: ranging, DDR, DTPL, ALO, CHO, etc. Work with existing TGs to coordinate efforts, Slide 12

13. doc.: IEEE 802.15- Submission, Slide 13 TG4r PAR Modified Scope This amendment integrates wireless ranging techniques and technologies for ranging, dynamic data rates, dynamic transmit power selection, asymmetric link operation, and time scheduled channel hopping (TSCH), including those existing within IEEE 802.15.4 and new to IEEE 802.15.4, into a consistent, standardized methods addressing the needs of a wide range of applications and PHYs and enabling the interoperability of devices by different vendors using thisese methods. Additionally, the amendment defines necessary MAC and PHY extensions which enable common radio based operations such as distance measurements.

14. doc.: IEEE 802.15- Submission Conference Call Thursday, 16 April at 16:00 BST, Slide 14