Transcript Comments on TGay PAR and CSD

March 2015
doc.: IEEE 802.11-15/0271r4
Comments on TGay PAR and CSD
Date: 2015-03-10
Authors:
Name
Company
Address
Edward Au
Marvell
Semiconductor
Carlos Cordeiro Intel
Submission
Phone
Email
[email protected]
[email protected]
Slide 1
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Abstract
This slide deck documents the comments on TGay PAR
and CSD, and the corresponding response from NG60
Study Group.
Submission
Slide 2
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Response to comments from 802 EC members
Submission
Slide 3
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from Paul Nikolich on PAR
Clause 5.2.b:
One of the requirements is to maintain or improve power efficiency per
station. Power efficiency is defined in the notes, but it is not clear to me what
the baseline against it will be assessed. Is it any battery powered device with
an 802.11 interface or some subset thereof (e.g. existing 802.11 based devices
in and around 60GHz)?
[Response]
Power efficiency of devices compliant with the project will be compared
against the power efficiency of devices compliant with the IEEE 802.11ad2012 amendment. We accept your comment and please refer to the updated
PAR.
Submission
Slide 4
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from Paul Nikolich on PAR
Clause 5.2.b:
Coexistence. Will coexistence with 802.15.3c & d based devices be evaluated?
[Response]
Yes, coexistence with other systems for license-exempt bands above 45 GHz,
including 802.15.3c & d and other future amendments, will be evaluated and
documented in Coexistence Assurance document. It is documented in clause
1.1.2 of CSD.
Submission
Slide 5
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Response to comments from 802.3
Submission
Slide 6
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from 802.3 on CSD
Clause 1.2.3:
The title of the amendment is temporary and irrelevant to the CSD question
so the latest sentence of the first paragraph should be deleted.
[Response]
We accept the comment and delete the latest sentence of the first paragraph.
Clause 1.2.4.a):
An amendment amends the base standard, not another amendment.
Something like “add refinements to” instead of “amend” in the second
sentence would be an improvement.
[Response]
Thank you for your comment. We made the suggested change.
Submission
Slide 7
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from 802.3 on CSD
Clause 1.2.4.b):
The answer is not really responsive. This question seeks evidence that
technology is sufficiently proven to allow a project to be completed in a
reasonable amount of time without need for research, fundamental
simulation and modeling. The response indicates that these tasks will be done
as part of standards development not as proof of feasibility, leading to the
conclusion that it is too early to approve a project. (It is unnecessary to
indicate that additional simulation and modeling will be used to validate and
refine selected specifications.)
[Response]
We accept the comment. Please refer to the updated PAR.
Submission
Slide 8
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Response to comments from 802.15
Submission
Slide 9
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from 802.15 on PAR
Clause 7.1:
802.11ay looks similar to 802.15.3c and 802.15.3e. Please note similarities and
differences.
[Response]
IEEE 802.15.3c-2009, which is an amendment to IEEE 802.15.3-2003, defines
operations in 60 GHz bands with a peak PHY date rate of around 5.8 gigabits
per second. The similarities are that both IEEE 802.11ay and IEEE 802.15.3e
define operation in license-exempt 60 GHz band. IEEE 802.11ay is
differentiated itself from IEEE 802.15.3c that it is the only for 802.11 WLANs
that aims to provide data rates in excess of 20 gigabits per second for pointto-point and point-to-multipoint indoor and outdoor usages for licenseexempt bands above 45 GHz.
Submission
Slide 10
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from 802.15 on PAR
[Response (Cont’d)]
IEEE 802.15 Study Group 3e (SG3e) is established in December 2014, which
works on the PHY and MAC amendments of the IEEE 802.15.3 for close
proximity high-data rate systems.
The similarities are that both IEEE 802.11ay and IEEE 802.15.3e define
operation in license-exempt 60 GHz band.
The difference is that the primary objective of IEEE 802.15.3e is to enable
close-proximity point-to-point communications with a typical range of 10cm
or less, mainly to replace physical connection. IEEE 802.11ay, on the other
hand, is part of the WLAN network and ecosystem. IEEE 802.11ay defines
standardized modification to IEEE 802.11 PHY and MAC for license-exempt
bands above 45 GHz and enables point-to-point and point-to-multi-point
indoor and outdoor usages with data rates in excess of 20 gigabits per second
and a range of 1km, while fully integrated with all other IEEE 802.11
components and standards.
Submission
Slide 11
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Response to comments from 802.22
Submission
Slide 12
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from 802.22 on PAR
Clause 2.1 and 5.2.b:
It will be great if you can specify what ‘in and around’ means.
Recommendation: Remove ‘in and around’ and change to in the 60 GHz
Band as defined by the regulatory requirements.
[Response]
We address this comment and please refer to the updated PAR.
Submission
Slide 13
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Response to comments from NesCom members
Submission
Slide 14
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from
Annette Reilly (NesCom member) on PAR
Clause 2.1:
The title of the standard refers to “ultra high” throughput. Could this be
replaced with a quantified range of throughput?
[Response]
Unlike standards related to frequencies or voltages, a quantified range of
throughput is hard to know in advance. While the scope of work includes a
target figure of 20 gigabits per second, the resulting amendment might do
substantially better than that and we expect that the range of throughput will
be determined by technologies considered during the creation of this
amendment. Building a quantified range of throughput into the title of the
amendment now might result in a misleading or misrepresentative title.
We are changing the title of the amendment to “Enhanced throughput for
operation in license-exempt bands above 45 GHz”.
Submission
Slide 15
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from
Annette Reilly (NesCom member) on PAR
Clause 5.5:
Is swath rather than swathe what is intended?
[Response]
We address your comment and change the word to “portion”.
Submission
Slide 16
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from
Osama Aboul-Magd (NesCom member) on PAR
Clause 2.1:
“Ultra high” needs to numerically defined.
[Response]
Unlike standards related to frequencies or voltages, a quantified range of
throughput is hard to know in advance. While the scope of work includes a
target figure of 20 gigabits per second, the resulting amendment might do
substantially better than that and we expect that the range of throughput will
be determined by technologies considered during the creation of this
amendment. Building a quantified range of throughput into the title of the
amendment now might result in a misleading or misrepresentative title.
We are changing the title of the amendment to “Enhanced throughput for
operation in license-exempt bands above 45 GHz”.
Submission
Slide 17
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from
Osama Aboul-Magd (NesCom member) on PAR
Clause 5.2.b:
Second paragraph: change “shall enable” to “enables”.
[Response]
“Shall enable” is replaced with “while ensuring”.
Submission
Slide 18
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from
Osama Aboul-Magd (NesCom member) on PAR
Clause 7.1
IEEE 802.15.3e PAR seems to be of similar scope. May add to section 7.1.
[Response]
We accept the comment and include IEEE 802.15.3e as a project with similar
scope.
Submission
Slide 19
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from
Osama Aboul-Magd (NesCom member) on PAR
Clause 7.1
How this project is different from those identified with similar scopes?
[Response]
IEEE 802.15.3c-2009, which is an amendment to IEEE 802.15.3-2003, defines
operations in 60 GHz bands with a peak PHY date rate of around 5.8 gigabits
per second.
ECMA TC 48 60 GHz specifies a PHY, distributed MAC sublayer and an
HDMI protocol adaptation layer for 60 GHz wireless network that supports a
maximum achievable PHY throughput of 6.35 gigabits per second.
IEEE 802.15.3d is an ongoing project that defines wireless switched point-topint PHY to IEEE 802.15.3 at a nominal PHY data rates of 100 gigabits per
second with fallbacks to lower data rates as needed. Operation is considered
in both licensed and unlicensed bands from 60 GHz up to and including
optical wireless.
Submission
Slide 20
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from
Osama Aboul-Magd (NesCom member) on PAR
[Response (Cont’d)]
IEEE 802.11aj is an ongoing project in IEEE 802.11 specifically focused on
the Chinese market. It defines standardized modifications to IEEE 802.11
PHY and MAC that allows applications to operate in the Chinese 45 GHz and
59-64 GHz frequency bands.
IEEE 802.15.3e is established in December 2014, which works on the PHY
and MAC amendments of the IEEE 802.15.3 for close proximity high-data
rate systems. Their primary objective is to enable close-proximity point-topoint communications with a typical range of 10cm or less.
IEEE 802.11ay is different from the aforementioned IEEE 802 wireless
standards/projects and ECMA projects in that it is specific for 802.11 WLANs
and aims to provide data rates in excess of 20 gigabits per second for point-topoint and point-to-multipoint indoor and outdoor usages for license-exempt
bands above 45 GHz.
Submission
Slide 21
Edward Au (Marvell Semiconductor)
March 2015
doc.: IEEE 802.11-15/0271r4
Comments from
Andrew Myles (NesCom member) on PAR
Clause 2.1:
What is “ultra high”?
[Response]
Since this project will result in a wireless LAN system with significantly higher
throughput than is provided by 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, and
802.11ad wireless networks, the term “ultra high” was used to differentiate itself from
other IEEE 802 wireless standards, which stresses the specification of higher
throughput wireless LAN technology for license-exempt bands above 45 GHz.
Unlike standards related to frequencies or voltages, a quantified range of throughput is
hard to know in advance. While the scope of work includes a target figure of 20
gigabits per second, the resulting amendment might do substantially better than that
and we expect that the range of throughput will be determined by technologies
considered during the creation of this amendment. Building a quantified range of
throughput into the title of the amendment now might result in a misleading or
misrepresentative title.
However, we are changing the title of the amendment to “Enhanced throughput for
operation in license-exempt bands above 45 GHz”.
Submission
Slide 22
Edward Au (Marvell Semiconductor)