doc.: IEEE g Submission September, 2010 Slide 1 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Comment Resolution for the MR-O-QPSK PHY] Date Submitted: [September, 2010] Source: [Michael Schmidt 1, Frank Poegel 1, Wilson Wang 2 ] Company [ 1 Atmel, 2 SIMIT] Re: [TG4g comment resolution] Abstract: [Comment Resolution for the MR-O-QPSK PHY] 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 g Submission September, 2010 Slide 2 Summary This document describes the proposed resolution on the comments related to the MR-O-QPSK PHY. The following comments are addressed: CID# 747, 905, 906, 1466, 469, 1468, 1502, 1483, 1484, 1092, 1494, 1496, 1501

doc.: IEEE g Submission September, 2010 Slide 3 CID 747 Comment: PD-DATA.request entries for MR-O-QPSK are missing Response: Accept Proposed Resolution: Add the following entries MROQPSKRateMode, MROQPSKSpreadingMode

doc.: IEEE g Submission September, 2010 Slide 4 Cont.~ CID 747 Proposed Resolution: Add the following parameter description Add to If the MROQPSKSpreadingMode parameter of the PD-DATA.request primitive is not supported, the PHY entity will issue the PD-DATA.confirm primitive with a status of UNSUPPORTED_MR_OQPSK_SPREADING_MODE.

doc.: IEEE g Submission September, 2010 Slide 5 CID 905 Comment: Need to specify some detailed information on RateMode subfield. Response: Accept Proposed Resolution: A cross reference to section 6.12c will be given.

doc.: IEEE g Submission September, 2010 Slide 6 CID 906 Comment: Length of Rate Mode subfield is not 1 bit. Response: Accept Proposed Resolution: Correct to 2 bits. See also comment resolution of CID 1470.

doc.: IEEE g Submission September, 2010 Slide 7 CID 1466 Comment: At page 68, line 27: What is the meaning of a compliant device in this sentence? Response: Accept in principle Proposed Resolution: Note: a similar terminology has been used in IEEE a Change to For the frequency bands MHz and MHz, the MR-O-QPSK PHY supports a co-alternative spreading mode during the PSDU part, called multiplexed direct sequence spread spectrum (MDSSS). For those frequency bands, a compliant device to this PHY shall support at least one of the spreading modes.

doc.: IEEE g Submission September, 2010 Slide 8 CID 469, 1468, 1502 Comment: Add frequency bands – MHz (Japan) – MHz (China) Response: Accept in principle Proposed Resolution: – Consider reusing and slightly adopting the narrow band DSSS specification of the MHz band (Europe), since there are similar regularity requirements for all bands.

doc.: IEEE g Submission September, 2010 Slide 9 Cont.~ CID 469, 1468, 1502 Modulation and coding (all bands i.e. China, EU, Japan): – Chip rate: 100 kchip/s (was 125 kchip/s in D1) – Modulation: RC-0.8 O-QPSK – SHR coding and spreading: BDE 1) + (16,1)-DSSS – PHR coding and spreading: rate ½ CC + BDE + (4,1)-DSSS – PSDU coding and spreading: RateMode = 0 : rate ½ CC 2) + BDE + (4,1)-DSSS [12.5 kbit/s] RateMode = 1 : rate ½ CC no BDE no spreading [50 kbit/s] RateMode = 2 or 3: not supported 1)BDE = Bit Differential Encoding 2)CC = Convolutional Encoding (K = 7)

doc.: IEEE g Submission September, 2010 Slide 10 Cont.~ CID 469, 1468, 1502 Channel assignment: – MHz: k*0.4 megahertz, for k = 0, …,98 – MHz: k in megahertz, for k = 0, …,15 – MHz: keep as specified in D1

doc.: IEEE g Submission September, 2010 Slide 11 Cont.~ CID 469, 1468, 1502 PSDU Chip whitening (all bands i.e. China, EU, Japan): – For RateMode = 0 and 1 CCA duration (all bands i.e. China, EU, Japan): – 1024 microseconds Frequency and Symbol Tolerance (all bands i.e. China, EU, Japan): – +/- 20 ppm maximum – Frequency and symbol tolerance are locked.

doc.: IEEE g Submission September, 2010 Slide 12 CID 1483, 1484 Comment: Add multiplexer to graphic Response: Accept

doc.: IEEE g Submission September, 2010 Slide 13 Cont.~ CID 1483, 1484 Resolution:

doc.: IEEE g Submission September, 2010 Slide 14 Cont.~ CID 1483, 1484 Resolution:

doc.: IEEE g Submission September, 2010 Slide 15 Cont.~ CID 1483, 1484 Resolution:

doc.: IEEE g Submission September, 2010 Slide 16 CID 1092 Comment: PHY constants and PIB attributes for MR-O-QPSK are missing or are not adopted Response: Accept in principle Proposed Resolution: Add the following PHY constants

doc.: IEEE g Submission September, 2010 Slide 17 Cont.~ CID 1092 Comment: PHY constants and PIBs for MR-O-QPSK are missing or not adopted Response: Accept in principle Proposed Resolution: Adopt the following PIBs PHYMaxFrameDuration (add note to a subsection) PHYSHRDuration (add note to a subsection) Mark the following PIBs as not relevant for MR-O-QPSK PHY PHYSymbolsPerOctet PHYScramblePSDU

doc.: IEEE g Submission September, 2010 Slide 18 Cont.~ CID 1092

doc.: IEEE g Submission September, 2010 Slide 19 CID 1494 Comment: Description of clock offset tolerance is unclear. Response: Accept in principle Proposed Resolution:

doc.: IEEE g Submission September, 2010 Slide 20 CID 1496 Comment: Terms like "maximum ratio" and "FER" are confusing in this context. Minimum ISR is misleading too, see Table 75af. Response: Accept Proposed Resolution: Change to: The interference-to-signal ratio (ISR) is the ratio of the signal power of an interferer relative to the signal power of the desired signal.

doc.: IEEE g Submission September, 2010 Slide 21 Cont.~ CID 1496 Proposed Resolution: Change title of ACI table to Minimum interference-to-signal ratio (ISR) requirements depending on |df| Change as indicated The interferer is separated in frequency by |df| from the carrier frequency of the desired channel with an ISR, as shown in Table …

doc.: IEEE g Submission September, 2010 Slide 22 CID 1501 Comment: CCA duration exceeds 20 symbol time which means slotted CSMA will not work in this PHY. Response: Reject Explanation: There is no symbol time defined for the MR-O-QPSK PHY, since it is a multi rate PHY with different spreading rates and modes during PSDU. Specified CCA duration (in microseconds) is related to the lowest PSDU data rate, supporting sufficiently reliable Energy Detect (ED) and / or Carrier Sense (CS) performance during any part of the PPDU. (Ben Rolfe, please comment on that response.)