Doc.: IEEE 802.15-10-0717-03-004g Submission September, 2010 Slide 1 Project: IEEE P802.15 Working...
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doc.: IEEE 802.15-10-0717-03-004g Submissio n September, 2010 Slide 1 Project: IEEE P802.15 Project: IEEE P802.15 Working Group for Wireless Personal Area Working Group for Wireless Personal Area Networks (WPANs) 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] E-Mail:[[email protected], [email protected], [email protected]] Re: [TG4g comment resolution] Abstract: [Comment Resolution for the MR-O-QPSK PHY] 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.
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Transcript of Doc.: IEEE 802.15-10-0717-03-004g Submission September, 2010 Slide 1 Project: IEEE P802.15 Working...
doc.: IEEE 802.15-10-0717-03-004g
Submission
September, 2010
Slide 1
Project: IEEE P802.15 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Comment Resolution for the MR-O-QPSK PHY]Date Submitted: [September, 2010]Source: [Michael Schmidt1, Frank Poegel1, Wilson Wang2] Company [1Atmel, 2SIMIT]E-Mail:[[email protected], [email protected], [email protected]]Re: [TG4g comment resolution]Abstract: [Comment Resolution for the MR-O-QPSK PHY] 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.
doc.: IEEE 802.15-10-0717-03-004g
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 802.15-10-0717-03-004g
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 802.15-10-0717-03-004g
Submission
September, 2010
Slide 4
Cont.~ CID 747• Proposed Resolution:
Add the following parameter description
Add to 6.2.1.2.3
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 802.15-10-0717-03-004g
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 802.15-10-0717-03-004g
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 802.15-10-0717-03-004g
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 802.15.4a-2007. Change to
“For the frequency bands 902-928 MHz and 2400-2450 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 802.15-10-0717-03-004g
Submission
September, 2010
Slide 8
CID 469, 1468, 1502• Comment: Add frequency bands
– 950-958 MHz (Japan)
– 470-510 MHz (China)
• Response: Accept in principle
• Proposed Resolution:
– Consider reusing and slightly adopting the narrow band DSSS specification of the 868-870 MHz band (Europe), since there are similar regularity requirements for all bands.
doc.: IEEE 802.15-10-0717-03-004g
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: BDE1) + (16,1)-DSSS
– PHR coding and spreading: rate ½ CC + BDE + (4,1)-DSSS
– PSDU coding and spreading: • RateMode = 0 : rate ½ CC2) + 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 802.15-10-0717-03-004g
Submission
September, 2010
Slide 10
Cont.~ CID 469, 1468, 1502• Channel assignment:
– 470-510 MHz:
• 470.2 + k*0.4 megahertz, for k = 0, …,98
– 950-958 MHz: • 950.9 + 0.4k in megahertz, for k = 0, …,15
– 868-870 MHz: • keep as specified in D1
doc.: IEEE 802.15-10-0717-03-004g
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 802.15-10-0717-03-004g
Submission
September, 2010
Slide 12
CID 1483, 1484
• Comment: Add multiplexer to graphic
• Response:
Accept
doc.: IEEE 802.15-10-0717-03-004g
Submission
September, 2010
Slide 13
Cont.~ CID 1483, 1484
Resolution:
doc.: IEEE 802.15-10-0717-03-004g
Submission
September, 2010
Slide 14
Cont.~ CID 1483, 1484
Resolution:
doc.: IEEE 802.15-10-0717-03-004g
Submission
September, 2010
Slide 15
Cont.~ CID 1483, 1484
Resolution:
doc.: IEEE 802.15-10-0717-03-004g
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 802.15-10-0717-03-004g
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 PIBsPHYMaxFrameDuration (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 802.15-10-0717-03-004g
Submission
September, 2010
Slide 18
Cont.~ CID 1092
doc.: IEEE 802.15-10-0717-03-004g
Submission
September, 2010
Slide 19
CID 1494Comment: Description of clock offset tolerance is
unclear.
• Response: Accept in principle Proposed Resolution:
doc.: IEEE 802.15-10-0717-03-004g
Submission
September, 2010
Slide 20
CID 1496Comment:
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 802.15-10-0717-03-004g
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 802.15-10-0717-03-004g
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.)
