Jul 2004

Slide 1Submission

doc.: IEEE 802.15-04/0339r0

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

Submission Title: [Multi-band MAC statement]Date Submitted: [12 July, 2004]Source: [Larry Taylor] Company [Staccatto Communications]Address []Voice:[], FAX: [], E-Mail: [larry.taylor@staccattocommunications.com]

Re: [Request for MAC support statements]

Abstract: [Provides statement on ability for mb-ofdm proposal to support 15.3 MAC.]

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.

Jul 2004

Slide 2Submission

doc.: IEEE 802.15-04/0339r0

MB-OFDM proposal 15.3 MAC spec support

September 2003 MB-OFDM MAC enhancement summary delivered as part of

confirmation no vote response [15-03-0343-01] – see attached. Key message: transparency to 15.3 MAC for default modes, where

value-add enhancements for MB-OFDM band management, etc. to be drafted in detail as part of 15.3a project are optional

Today There are no changes to the MB-OFDM IEEE 15.3a PHY proposal

since Sept. 2003 that would prevent the MB-OFDM PHY proposal from supporting the 15.3 MAC specification

Jul 2004

Slide 3Submission

doc.: IEEE 802.15-04/0339r0

Backup slides

Copy of foils from September 2003 MB-OFDM contribution [15-03-0343-01]

Jul 2004

Slide 4Submission

doc.: IEEE 802.15-04/0339r0

MAC Enhancements for Multiband OFDM

Presenter Larry Taylor (Staccato Communications)

Jul 2004

Slide 5Submission

doc.: IEEE 802.15-04/0339r0

Transparency to 15.3

Value-add enhancements Band management / frequency agility Ranging support

MAC Enhancement Conclusions

MAC Enhancement OutlineMAC Enhancement Outline

Jul 2004

Slide 6Submission

doc.: IEEE 802.15-04/0339r0

Multi-band OFDM PHY has default modes Band management is part of an optional

value-add story

MAC functional behavior can stay the same as before E.g., rate selection and capability probing

mechanics are unchanged

Transparency to 15.3Transparency to 15.3OverviewOverview

Jul 2004

Slide 7Submission

doc.: IEEE 802.15-04/0339r0

As per MAC convention, chosen by index Associated to 4 bits defined in PHY header Rate is independent of band management!!

Transparency to 15.3Transparency to 15.3Transmitter rate selectionTransmitter rate selection

Rate Index Data Rate

Coding Rate

Spreading Rate

Information Tones

0 (mandatory 55 11/32 4 25 1 80 1/2 4 25 2 (mandatory) 110 11/32 2 50 3 160 1/2 2 50 4 (mandatory) 200 5/8 2 50 5 320 1/2 1 100 6 480 3/4 1 100 7 – 15 TBD TBD TBD TBD

Jul 2004

Slide 8Submission

doc.: IEEE 802.15-04/0339r0

Uses same rate capability bits as before Described in 15.3, section 7.4.11

Proposed rate encoding:

Transparency to 15.3Transparency to 15.3Rate capability probingRate capability probing

Value Supported Rates (Mbps)

Comments

0 55, 110, 200 Mandatory rates 1 55, 80, 110, 160, 200 ½ rate coding added 2 55, 80, 110, 160, 200, 320 Spreading_rate = 1 added 3 55, 80, 110, 160, 200, 320,

480 ¾ rate coding added

4-31 Future Future rates

Jul 2004

Slide 9Submission

doc.: IEEE 802.15-04/0339r0

Multi-band OFDM inherently suitable for performing controlled frequency agility Selective usage of bands

Great for “good neighbor” behavior or regulatory configuration Bands can be punctured to address severe near-far

scenarios Optional enhancements to be developed:

Primitives to support local and remote band assessment on a per band basis (RSSI, LQI)

Primitives to support band usage on a per piconet basis

Primitives to support code puncturing on a per stream basis

Band capability bit definitions for 7.4.11

Value-add enhancementsValue-add enhancementsBand management / frequency agilityBand management / frequency agility

Jul 2004

Slide 10Submission

doc.: IEEE 802.15-04/0339r0

Ranging option requires a new MAC command Ranging request/response Includes sequence numbers

New MLME primitives needed to initiate request and obtain response

See ranging summary for more details

Value-add enhancementsValue-add enhancementsMAC support for RangingMAC support for Ranging

Jul 2004

Slide 11Submission

doc.: IEEE 802.15-04/0339r0

Transparency to 15.3 Multi-band OFDM PHY default mode

requires no new MAC functional behavior

Value-add enhancements (optional) Band management / frequency agility,

and ranging

MAC Enhancement MAC Enhancement ConclusionsConclusions