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Doc.: IEEE 802.15-10-0538-04-004g Submission June, 2010 Larry Taylor, DTC (UK)Slide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks.

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Presentation on theme: "Doc.: IEEE 802.15-10-0538-04-004g Submission June, 2010 Larry Taylor, DTC (UK)Slide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks."— Presentation transcript:

1 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 1 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Comment Resolutions – Taylor et al] Date Submitted: [ 11 July, 2010] Source: [J.L.Taylor], Company [DTC (UK)], Address [UK], Re: [LB51 Comment Resolution] Abstract:[This contribution contains various comment resolution proposals] Purpose:[Response to assigned LB51 comments] 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

2 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 2 Contents Part MHz Band Channel Numbers Part 2 - MR-O-QPSK Channel Numbers Part 3 - OFDM & MR-O-QPSK Page 7 definition Part 4 - MLME Scan for SUN PHYs Part 5 - MR-O-QPSK Channel Pages Part 6 - PIB Attributes

3 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 3 Part MHz Band Channel Numbers Related comments Taylor 637, 638

4 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 4 Proposed Resolution Define 200kHz spacing for the band –Make the Table 1a † note also apply to Channel Spacing entries for optional data rate columns for MHz band Delete last paragraph in a.3 –Channel numbers will be defined according to equation (1) Insert in a suitable place in a.3 (taking into account other comment resolutions on GuardBand): –GuardBand = 25kHz for European band Note also that product vendors will declare support for channel numbers compliant with local regulatory requirements via the phySUNChannelsSupported PIB attribute

5 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 5 Daniel Popa (Itron), Larry Taylor (DTC(UK)) Slide 5 Resolutions #CommentProposed Resolution 637"Exceptions may apply to the upper part of the European 868 MHz band, where channel carrier assignment may be individually tailored to suit regulatory requirements." What will be the channel carrier assignment? Accept in Principle. Resolution as in Document g Part 1 638The statement that exceptions to channel numbering for the upper part of the European 868MHz band is unqualified and therefore with little meaning. How are the channel numbers tailored? Accept in Principle. Resolution as in Document g Part 1

6 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 6 Part 2 MR-O-QPSK Channel Numbers Related comments Taylor / Schmidt / Park 470, 643, 644, 649, 661

7 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 7 Section a.4 Remove each occurrence of “For channel page x, ”, where x = 0,1,2,3

8 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 8 Resolutions #CommentProposed Resolution 470This chapter is quite confusing. There is no placeholder for the channel number. For both, the MR-O-QPSK PHY and the OFDM PHY, the "PHY Mode" field is not useful, since all information on the PHY mode is transmitted within PPDU. Accept in principle - resolution as in Document g Part 2 643Overloads channel page 0,4 which are already used in the base standard, so this is not allowed in an amendment. Accept in principle - resolution as in Document g Part 2 644This is inconsistent with a.1 which says this PHY is specified as channel page 7. Accept in principle - resolution as in Document g Part 2 649Overloads channel page 1 and 3 which are used in the base standard, which is not allowed. Accept in principle - resolution as in Document g Part 2 661Channel page 2 and 3 are already used.Accept in principle - resolution as in Document g Part 2

9 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 9 Part 3 OFDM & O-QPSK Page 7 PHY Mode Representation Related comments Taylor / Seibert 494

10 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 10 Modify Figure 22a as follows Bits Bits:26..22Bits:21..20Bits:19..16Bits: …………… Page 7Frequency Band Modulation Scheme = MR-FSK ReservedBit map, where each bit corresponds to a particular PHY mode Modulation Scheme = OFDM Bits: Reserved Bit: (Integer) OFDM Option (Range 1..5) Bit: 8..0 (Bit Map) MCS Values Supported (for Option) Modulation Scheme = MR-O-QPSK Bits: Reserved Bit: 4 Spreading Mode Bit: 3..0 (Bit Map) Rate Modes Supported

11 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 11 Daniel Popa (Itron), Larry Taylor (DTC(UK)) Slide 11 Resolutions #CommentProposed Resolution 494The number of bits to specify the mode implemented by an OFDM device is greater than what is available with this proposed channel numbering technique. There are 32 valid combinations of modulation and coding schemes in OFDM. Accept in Principle. Resolution as in Document g Part 3

12 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 12 Part 4 MLME Scan for SUN PHYs Related comments Taylor / Ecclesine 474

13 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 13 Section , Table 67, row 2 ScanChannels Change the Valid Range column to: –27-bit field. If phyCurrentPage = 7 or 8, (phyMaxSUNChannelSupported+1)-bit field Change the Description column to: –The bits (b 0, b 1.. b n-1 where n=27 or (phyMaxSUNChannelSupported-1) ) indicate which channels are to be scanned (1=scan, 0=do not scan) for each of the channels supported by phyCurrentPage

14 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 14 Daniel Popa (Itron), Larry Taylor (DTC(UK)) Slide 14 Resolutions #CommentProposed Resolution 474The new bitmap defined in page 7 and page 8 is not compatible with the legacy bitmaps and is causing some issues for the MLME- SCAN.request primitive (clause in ) Accept in Principle. Resolution as in Document g Part 4

15 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 15 Part 5 MR-O-QPSK Channel Pages Related comments Schmidl / Taylor / Schmidt / Park 501, 521, 584, 585, 586

16 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 16 General Comment on Figures 22x All the information contained in the PHY Mode figures is already contained elsewhere in the specification There is a comment suggesting to move the figures to an informative annex Alternative is to delete them as they are redundant This would also obviate the need to add new figures for MR-O- QPSK and OFDM PHY Modes In order to make the MR-FSK PHY Mode mapping to the standard PHY Mode bit map unambiguous: –add PHY Mode 0, PHY Mode 1 and PHY Mode 2 to the Column headings for the 3 Mandatory and Optional columns in Table 1a –Add a PHY Mode column to Table 1 and include the PHY Mode number for the different entries for each frequency band (as is done in Table 75p for RateMode in MR-O-QPSK)

17 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 17 June, 2010 Larry Taylor, DTC (UK)Slide 17 Note to Editors - add Figures 22m… Create figures in the PHY modes list for MR-O-QPSK –In each figure set the Page number to 7 –In each figure set bits to (1,0) and define it as O-QPSK Frequency band values are: – MHz is band 15 – MHz is band 2 – MHz is band 3 – MHz is band 4 For each frequency band in Table 75p and Table 75q define the figure with: –Bits corresponding to the Frequency Band index in Table 3a –Bits 19-5 Reserved –Bit 4 set to the Spreading Mode –Bits 3-0 set to 1 except for MHz band –Define rows for the 4 (3 for band 2) PHY Modes defined in each band as per table 75p and table 75q

18 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 18 Note to Editors - add OFDM Figures 22x.. For each frequency band in Table 1 with OFDM in the Modulation column –In each figure set the Page number to 7 –In each figure set bits to (0,1) and define it as OFDM Frequency band values are: –470 is band 7 –780 is band 15 – is band 2 –915 is band 3 –922 is band 16 –950 is band 0 – is band 4 For each frequency band define the figure using Option and MCS values from Table 75f: –Bits corresponding to the Frequency Band index in Table 3a –Bits Reserved –Bits 12-9 set to the Option value –Bits 8-0 set to the MCS values supported

19 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 19 Resolutions #CommentProposed Resolution 501Figures 22b,c,…seem to repeat information already given in and at the very beginning of this subclause. Are they necessary? If so, should they be moved into an annex? Accept in principle - resolution as in Document g Part 5 521The columns "Page, Freq Band, Modulation Scheme" are redundant, they are specified elsewhere. Repeating them here will just lead to mistakes. All the reader needs to know is the standard defined PHY mode mapping. Accept in principle - resolution as in Document g Part 5 584Fig 22b through 22l do not include any OFDM bands. Accept in principle - resolution as in Document g Part 5 585This clause does not completely describe all the PHY mode combinations called out 6.12a/b/c. This needs to be a complete and consistent specification for al SUN PHYs Accept in principle - resolution as in Document g Part 5

20 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 20 Daniel Popa (Itron), Larry Taylor (DTC(UK)) Slide 20 Resolutions #CommentProposed Resolution 586Complete the specification to describe how each field in the channel page structure should be set. Consider moving the examples to informative annexes. Consider including examples of channel paging structures with OFDM usage. Accept in Principle. Resolution as in Document g Part 5

21 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 21 Part 6 PIB Attributes Related comments Taylor 1107, 1175

22 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 22 Global Corrections At the Editors’ discretion –In all tables defining PIB Attributes, rename “Range” to “Valid Range” –Change all Valid Range definitions of the type “x/8 octets or x bits” to “x bits” x/8 is not the number of octets required to contain x bits – it is Ceiling(x/8). We do not need to tell the reader there are 8 bits in an octet….

23 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide , Table 31 Rename “Range” to “Valid Range” Row 1 phyMaxSUNChannelSupported –Change the Valid Range column to a range in agreement with changes to channel number range –Change Description column to: phyMaxSUNChannelSupported defines the highest channel number supported and therefore defines the number of bits in phySUNChannelsSupported

24 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 24 Section 6.4.2, Table 31a Rename “Range” to “Valid Range” Row 3 NumChannels –Change the Valid Range column to a range in agreement with changes to channel number range Row 4 Channel Spacing –Change the Valid Range column to: 1,, 1,200 –Change the Description column to: The distance between adjacent channel center frequencies in kHz Row 5 Data Rate –Change Type column to: Float –Change Valid Range column to: 1-1,000 –Change the Description column to: The data rate in kbps. Row 6 Modulation Scheme –Delete row – duplicate information to table 3b

25 doc.: IEEE g Submission June, 2010 Larry Taylor, DTC (UK)Slide 25 Daniel Popa (Itron), Larry Taylor (DTC(UK)) Slide 25 Resolutions #CommentProposed Resolution 1107Further evidence that the channel numbering proposal for MRFSK PHYs requires clarification and verification. The description of phyMaxSUNChannelsSupported is incorrect. It states that 'The page 7 or page 8 entry specified by phyCurrentSUNPageEntry describes the total number of defined channel for the PHY mode….' This is not correct Accept in Principle. Resolution as in Document g Part The parameter values in 6.42 require further clarification. For example, the parameters in table in 31a are not consistent with the tolerances specified in 6.12.a4 Accept in Principle. Resolution as in Document g Part 6


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