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

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: PIB Coordination in 802.15.4g Date Submitted: 10 September, 2010 Source: Larry Taylor Company DTC (UK) , James Gilb Company SiBeam, Ben Rolfe Address [ UK ], [ USA ], [USA]

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

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  1. Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC] Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title:PIB Coordination in 802.15.4g Date Submitted: 10 September, 2010 Source:Larry Taylor Company DTC (UK), James Gilb Company SiBeam, Ben Rolfe Address [UK], [USA], [USA] Voice:[-], FAX: [-], E-Mail:larry.taylor@discretetime.com, gilb@ieee.org, ben@blindcreek.com Re:802.15.4g Letter Ballot Comment Resolution. Abstract:This document proposes resolution to comments on coordination of PIB attributes in 802.15.4g Purpose:To aid comment resolution for Letter Ballot 51 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. Exchange of Information Elements for PIB Attribute coordination including Generic PHY Descriptors Resolves comments 592, 593, 596,1069,1239 PIB Attribute Coordination Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC]

  3. Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC] PIB Attribute Coordination • The MAC sub-layer enhancements proposed in 802.15.4e to define a means of supporting Information Elements will be used to support the exchange of PIB Attribute Coordination Information Elements • Coordination is achieved via two types of IEs • Query IE – a list of IEs is requested from a specific device (unicast DA) or from all neighbouring devices (broadcast DA) • Declarative IEs – IEs with information on PIB Attributes • No explicit acknowledgement procedure is defined • A Query IE should be repeated until the required information is provided • May be made backwards compatible by also defining IEs for 802.15.4 (2009) PIB Attributes

  4. MAC layer enhancement - IEs • Simple TLV IE structure (as is used in many other standards) • Type field – IE ID • Length in octets of the information field • Information contained in the Information Field • Request IEs by sending a Query IE • Request specific IEs • Unicast or Broadcast destination addresses • Response via declaring IEs • Unicast to Query IE source address • Broadcast for unsolicited declaration Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC]

  5. Query IE • IE ID = 0 identifies the Query IE • Base offsets these IE IDs past other proposed or existing IEs • Length field varies with the number of requested IEs • Information Field is a list of IE IDs • A PIB Attribute IE is immediately followed by the PIB Attribute ID requested Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC]

  6. PIB Attribute IE • IE ID = 1 identifies the PIB Attribute IE • Length field varies with PIB Attribute in the IE Body • Information Field is one or more PIB Attribute triples • PIB Attribute ID (0..255) • PIB Attribute Length (octets) • PIB Attribute Value • Number of PIB Attributes determined by PIB Attribute IE Length Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC]

  7. SUN PHY Capabilities IE • IE ID = 2 identifies the SUN Capabilities IE • Length – Varies with number of PHY Types • Information Field contains: • Bit String indicating miscellaneous capabilities [0=unsupported, 1=supported] • Bit 0 : Interleaving • Bit 1 : Optional SFD Group • Bits 2-3 : FEC Schemes • Bits 4 : Mode Switch • Bits 7-5 : Reserved Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC]

  8. SUN PHY Capabilities IE (cont.) • Frequency Bands Supported • 16-bit field 1 bit per band defined in Table 4a (3 bits reserved) • Set of PHY Type Supported declarations • 16-bit field • 4-bit PHY Type Identifier Field (8 reserved values) • 12-bit map of PHY Modes Supported (at least 2 reserved values) • There are 10 FSK modes, 8 O-QPSK (DSSS) modes • 8 O-QPSK (MDSS) modes, 5 OFDM Options each with 9 MCS modes Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC]

  9. Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC] Generic PHY Descriptor PIB Attribute • Generic PHY Descriptor PIB Attribute encoding is: • 4-bit Generic PHY ID • 4-bit Modulation Scheme (see Table 4b – undefined values reserved) • n-bit Modulation Order (2-level, 4-level) define table • n-bit BT (0.5, 1.0... others?) – define table • TBD Modulation Index (0.25..2.50 step size?) • Frequency representation – 64/48 bits?? • Symbol Rate representation – 32/24 bits??

  10. Mode Switch Parameters PIB Attribute • Mode Switch Parameters PIB Attribute encoding is: • Packed field with: • Index into ModeSwitchParameterEntries • Secondary SFD • Settling Delay • Secondary Preamble Length Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC]

  11. Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC] Resolutions

  12. Taylor [DTC (UK)], Gilb [SiBeam], Rolfe [BCC] Resolutions

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