1. VHT SG PAR Feedback from Individuals
April 2007
doc.: IEEE /0570r0
July 2008
VHT SG PAR Feedback from Individuals
Date:
Authors:
Eldad Perahia, Intel Corporation
Eldad Perahia, Intel Corporation

2. Individual General Comments
April 2007
doc.: IEEE /0570r0
July 2008
Individual General Comments
International Standards Adoptions
We have “no” for both PARs in section 7.2.
Change to “Do not know at this time” may consider submission to ISO
add “users” as stakeholders in 5.6
“Manufacturers and users of semiconductors, personal computers, networking infrastructure devices and consumer electronics.”
Regarding 1.1, add additional explanatory note that this is an amendment to the then current revision of the IEEE standard
Define acronyms: BSS, AP, STA, NLOS
Fix style, e.g. space between numbers and units
Eldad Perahia, Intel Corporation
Eldad Perahia, Intel Corporation

3. Individual <6 GHz PAR Comments (1/2)
April 2007
doc.: IEEE /0570r0
July 2008
Individual <6 GHz PAR Comments (1/2)
Add “item numbers” to bullet items in Additional Explanatory Notes
5.3 Is the completion of this standard is dependent upon the completion of another standard: No
Probably dependent on n, so may need to change to yes
5.5 Need for the Project
Regarding “Wireless networks are particularly in need of continual enhancements since the link is by definition shared”, faulty rationale, but doubt it will draw negative votes
Higher speed networks are primarily justified by higher throughput requirements, independent of radios being a shared medium in a given space b)
Minor edit “According to the Wi-Fi Alliance the community of Wi-Fi users in 2008 is estimated to count more than 250 M members.”
Eldad Perahia, Intel Corporation
Eldad Perahia, Intel Corporation

4. Individual <6 GHz PAR Comments (2/2)
July 2008
Individual <6 GHz PAR Comments (2/2) a)
Regarding “The goal is to increase the overall system throughput by considering new technologies, for the both PHY and MAC layers, operating below the 6 GHz band.”
MAC enhancements (Scope) usually are not equated with new MAC technologies. If it is a different MAC, why is it part of ?
Regarding “IEEE P TG3c intends to support higher physical data rates than those currently defined by P task group 3, and similar to those targeted by this proposal.”
TG structure is typically not know well to know the difference between TG 3c and TG3? It is better to refer to the standards than to the WG subgroups. b)
“There is no other wireless LAN standard providing significantly higher throughput than vht operating in bands below 6GHz.”
Inconsistent style Other places it is VHT and not concatenated. c)
Regarding “The vht amendment will differentiate itself from other IEEE 802 wireless standards via the title which stresses the specification of gigabit speed WLAN technology.”, when approved an amendment becomes part of and buried in 1000s of pages. Its title is lost when merged for publication.
Perhaps reword to “An introduction sub-clause will be added to clause 5.2, which will highlight modifications and their associated clauses.”
Eldad Perahia, Intel Corporation

5. Individual 60 GHz PAR Comments
April 2007
doc.: IEEE /0570r0
July 2008
Individual 60 GHz PAR Comments
Balanced costs (LAN versus attached stations)
“WLAN cost for existing and new technologies continue to be competitive, new high throughput solutions will not change this paradigm and it is clear that cost parity will be maintained for VHT WLAN.” does not answer question
Suggestion: “VHT is expected to show similar balance between end-station and network infrastructure (e.g., access points) to that of previous WLAN options” b)
Minor edits: “There are no other wireless LAN standards providing significantly higher throughput than VHT proposes.” c)
“60 GHz Very High Throughput will be introduced as a new amendment in ”, doesn’t really answer the question
Perhaps reword to “60 GHz PHY will likely be amended to as a new clause. An introduction sub-clause will be added to clause 5.2, which will highlight MAC modifications and their associated clauses.”
Demonstrated system feasibility.
“Link budget analysis has been introduced to the Study Group as has the market opportunity in the unlicensed 60 GHz domain.”, mixing tech with economic and broad market criteria
Eldad Perahia, Intel Corporation
Eldad Perahia, Intel Corporation