project: ieee p802.15 working group for wireless personal area networks (wpans)
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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [ Multi-band MAC statement ] Date Submitted: [ 12 July, 2004 ] Source: [Larry Taylor] Company [ Staccatto Communications ] Address [] - PowerPoint PPT PresentationTRANSCRIPT
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: [[email protected]]
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