doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [D17 address change impact] Date Submitted: [14 November, 2002] Source: [Phil Jamieson] Company [Philips] Address [Cross Oak Lane, Redhill, Surrey, RH1 5HA, UK] Voice:[+44 (1293) ], FAX: [+44 (1293) ], Re: [Draft 17] Abstract:[This document the impact of the addressing changes proposed in document 02476r0.] Purpose:[To help TG4 decide whether to apply the addressing changes.] Notice:This document has been prepared to assist the IEEE P 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

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Draft 17 Address Change Impact Phil Jamieson, Philips

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Primitives Requiring Changes MCPS-DATA.request/confirm/indication MLME-ASSOCIATE.request MLME-GTS.indication MLME-SECURITY-ERROR.indication

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Miscellaneous Changes PANDescriptor Association must result in the allocation of a short address

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 General Frame Format Octets: 210/20/1/2/80/20/1/2/8Variable2 Frame control Sequence number Destination PAN identifier Destination address Source PAN identifier Source address Frame payload Frame check sequence Addressing fields MAC headerMAC payload MAC footer Octets: 210/2 Variable2 Frame control Sequence number Destination PAN identifier Destination address Source PAN identifier Source address Frame payload Frame check sequence Addressing fields MAC headerMAC payload MAC footer Proposed: Draft 17: Increases usable payload: 114 instead of 102 octets

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Frame Control Field Bits: Frame type Security enabled Frame pending Ack req.ReservedDest. Addressing Mode ReservedSource addressing mode Bits: Frame type Security enabled Frame pending Ack req.Dest. address present Source address present Draft 17: Proposed: Would still require 16 bits if security proposal was to be adopted

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Short Address Structure Bits: AddressAddress type 0xffffBroadcast short address 0xfffeAssociation short address 0xfffd-0x8100Reserved 0x80ff-0x8000Multicast short addresses 0x7fff-0x0000Normal short addresses 0 = normal 1 = multicast Addressing options:

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Beacon Frame Pending address specification –No need to allow for IEEE addresses Address list is much smaller –Maximum 7x2 bytes, instead of 7x8

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 MAC Commands Requiring Changes Association request Association response Disassociation notification PAN ID conflict notification Coordinator realignment Orphan notification

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Association Association request(DstAddr) –DstAddr is the beacon address –Payload contains device IEEE address Association response(DstAddr) –DstAddr is the association address (0xfffe) –Payload contains device IEEE address, new short address and coordinator IEEE address During association, the device requesting association assigns itself the association address, 0xfffe, filtering accordingly.

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Disassociation Disassociation notification(DstAddr, SrcAddr) –DstAddr is the short address of coordinator –SrcAddr is the short address of device –IEEE address is not necessary Disassociation notification(DstAddr, SrcAddr) –DstAddr is the short address of device –SrcAddr is the short address of coordinator –IEEE address is not necessary

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 PAN ID Conflicts PAN ID conflict notification(DstAddr, SrcAddr) –DstAddr is the short address of PAN coordinator –SrcAddr is the short address of device –Payload contains device IEEE address

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Coordinator Realignment Coordinator realignment(DstAddr) –DstAddr is the broadcast address (0xffff) Coordinator realignment(DstAddr, SrcAddr) –DstAddr is the association address (0xfffe) –SrcAddr is the short address of coordinator –Payload contains coordinator IEEE address

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Orphan Notification Orphan notification(DstAddr) –DstAddr is the broadcast address (0xffff) –Payload contains orphaned device IEEE address During orphan resolution, the orphaned device assigns itself the association address, 0xfffe, filtering accordingly.

doc.: IEEE /xxxr0 Submission Phil Jamieson November 2002 Conclusions 6 Primitives changes Frame structure changes 6 MAC command changes Despite a large number of changes necessary to implement the addressing change the overall impact on the schedule for re-circulation is low