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doc.: IEEE 802.15-<doc#> <month year> doc.: IEEE 802.15-<doc#> <March 2019> Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [802.15.12 – Compression Concept Overview] Date Submitted: [12 March 2019] Source: [Pat Kinney], Company: [Kinney Consulting] Address [Chicago area, IL, USA] Voice: [+1.847.960.3715], E-Mail: [pat.kinney@kinneyconsultingllc.com] Re: [Information on SAP and Module ID Compression] Abstract: [Information on SAP and Module ID Compression] Purpose: [For informational purposes only] 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> <author>, <company>

Compression Concept Overview <March 2019> 802.15.12 Compression Concept Overview <Pat Kinney>, <Kinney Consulting>

<March 2019> <Pat Kinney>, <Kinney Consulting>

Step 1: Higher Layer data request <March 2019> Step 1: Higher Layer data request PDE-DATA.request ( DstAddr (0x87654321) ModuleId (“PTM”) ProfileId (0xEB) PdeData (payload) PdeHandle (0xAE) ) <Pat Kinney>, <Kinney Consulting>

Step 2: Higher Layer data request <March 2019> Step 2: Higher Layer data request PDE-DATA.confirm ( PdeHandle (0xAE) MaxTransferSize (0) Status (Success) ) Note: confirm was automatically returned to correct SAP, i.e. Source SAP ID was noted. <Pat Kinney>, <Kinney Consulting>

Step 3: Higher Layer data request <March 2019> Step 3: Higher Layer data request PDE-DATA.indication ( SrcAddr (0x12345678) SrcSapId (0xA0ED) DstAddr (0x87654321) DstSapId (0xA0ED) ModuleId (“PTM”) PdeData (payload) ) <Pat Kinney>, <Kinney Consulting>

Step 3: Higher Layer data request <March 2019> Step 3: Higher Layer data request PDE-DATA.indication ( SrcAddr (extended addr of source = 8) SrcSapId (PDE SAP ID of source = 2) DstAddr (extended addr of destination =8) DstSapId (PDE SAP ID of destination = 2) ModuleId (module ID of both source and destination Module = 2) PdeData (payload =???) ) <Pat Kinney>, <Kinney Consulting>

Compression potential <March 2019> Compression potential It can be seen from the PDE-DATA.indication primitive that the Src and Dest addresses form 16 octets of overhead while the SAP IDs and Module ID is 6 octets of overhead. Since the SAP IDs and Module ID are typically used together, future message lengths could be reduced by using a compressed value that the destination’s MMI could expand back to the original values of SAP IDs and Module ID. <Pat Kinney>, <Kinney Consulting>

ULI IE <March 2019> 2 1 2 2 2 2 8 8 Variable ULI IE ID IE Control Source SAP Destination SAP Source Module ID Destination Module ID Source Address Destination Address Length Payload ULI IE Source Address Extended Destination Address Extended Destination SAP = 0xA0ED Module ID Compression SAP ID compression Reserved Reserved Extension IE Control <Pat Kinney>, <Kinney Consulting>