doc.: ieee 802.11-11/0489r0 submission march 2011 steve shellhammer, qualcomm inc.slide 1 wideband...
TRANSCRIPT
doc.: IEEE 802.11-11/0489r0
Submission
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 1
Wideband PHY Channel AvailabilityDate: 2011-03-29
Name Affiliations Address Phone email Steve Shellhammer Qualcomm 5775 Morehouse
Drive, San Diego CA 1-858-658-1874
Ahmed Sadek Qualcomm 5775 Morehouse Drive, San Diego CA
1-858-658-1362
VK Jones Qualcomm 3165 Kifer Road Santa Clara, CA
+1-408-533-9522
Rolf DeVegt Qualcomm 3165 Kifer Road Santa Clara, CA
1-408-533-9545
Hemanth Sampath Qualcomm 5775 Morehouse Drive, San Diego CA
1-858-658-1848
Abraham Santosh Qualcomm 5775 Morehouse Drive, San Diego CA
1-858-651-6107
Menzo Wentink Qualcomm Breukelen, the Netherlands
+31-65-183-6231
Richard Van Nee Qualcomm Breukelen, the Netherlands
+31-346-259-650
Authors:
doc.: IEEE 802.11-11/0489r0
Submission Steve Shellhammer, Qualcomm Inc.Slide 2
Abstract
There are several methods to obtain wideband PHY operation in the TVWS: wideband PHY and multicarrier PHY. This presentation provides a study of how many wideband WLAN channels are available in the TVWS using each of these two approaches
March 2011
doc.: IEEE 802.11-11/0489r0
Submission
Comment IDs
CID CID13, CID14, CID18, CID76, CID80, CID89, CID103, CID154, CID235, CID239, CID240, CID263, CID264, CID266, CID334, CID478, CID479, CID480, CID481, CID523, CID526, CID548, CID575, CID621, CID629, CID637, CID649, CID652, CID681, CID733, CID738, CID748, CID754, CID797, CID806, CID810, CID832, CID870, CID885, CID921, CID976, CID1003, CID1005, CID1193, CID1197, CID1198, CID1199, CID1291, CID1292, CID1295, CID1296, CID1300, CID1302
Comment Comments about 5/10/20 MHz PHY Design
March 2011
Slide 3 Steve Shellhammer, Qualcomm Inc.
doc.: IEEE 802.11-11/0489r0
Submission
Goal• It may be reasonable to restrict BW operation to only
5MHz in 802.11af
• For use cases that require higher throughput, higher levels of BW may be required
• How best to achieve these higher BW modes?
• Need also to consider carrier sense of wideband PHY modes for coexistence between different BW PHYs
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 4
doc.: IEEE 802.11-11/0489r0
Submission
Outline• Options for 10 MHz and 20 MHz WLAN channels
• White space availability for 10 MHz and 20 MHz channels – Study across all zip codes in the United States– Portable Networks
– Fixed/Portable Networks
• Conclusions
• Annex– Study for 50 largest cities in the United States
• White space availability for 10 MHz and 20 MHz channels
• Study for both Portable and Fixed/Portable Networks
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 5
doc.: IEEE 802.11-11/0489r0
Submission
Options for 10 MHz WLAN Channels
Option #1 Option #2
Label 10 5+5
WLAN PHY 10 MHz PHY•Approach used in Current Draft
Multicarrier PHYUse two non-adjacent 5 MHz carriersSimilar to 80+80 in 802.11ac
TV Channel Usage
Requires two adjacent TV channels Requires two non-adjacent TV channels
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 6
doc.: IEEE 802.11-11/0489r0
Submission
Options for 20 MHz WLAN Channels
Option #1 Option #2 Option #3
Label 20 10+10 5+5+5+5
WLAN PHY
20 MHz PHY•Approach used in Current Draft
Multicarrier PHYUse two non-adjacent 10MHz carriersSimilar to 80+80 in 802.11ac
Multicarrier PHYUse four non-adjacent 5MHz carriers
TV Channel Usage
Requires four adjacent TV channels
Requires two pairs of two adjacent TV channels
Requires four non-adjacent TV channels
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 7
doc.: IEEE 802.11-11/0489r0
Submission
Wideband Channel Availability Study• Obtained FCC standard power TV database
• Obtained low-power TV database (by zip code)
• Calculated which TV channels are available for each zip code in the United States– Networks of portable devices
– Networks of fixed/portable devices
• Our analysis agrees well with UC Berkeley analysis [1] – Our analysis has been updated based on the final FCC R&O
• Calculated the number of WLAN channels for each of the options, for a typical user
• This number is a random variable
• Plotted the CDF of the number of available WLAN channels
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 8
doc.: IEEE 802.11-11/0489r0
Submission
Number of 10 MHz WLAN Channels
• Calculate the population that has N 10 MHz channels– Perform calculation for both Option #1 and #2
• The probability that a user has N 10MHz WLAN channels is that population divided by the total US population– By calculating for each value of n we can obtain the probability mass
function for N – PN(n)
– Convert from probability mass function (PMF) into the cumulative distribution function (CDF) and plot
• Same approach for 20 MHz WLAN Channels– Consider Options #1, #2, #3
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 9
doc.: IEEE 802.11-11/0489r0
Submission
Portable Networks – Number of 10 MHz WLAN Channels
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 10
doc.: IEEE 802.11-11/0489r0
Submission
Portable Networks – Number of 20 MHz WLAN Channels
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 11
doc.: IEEE 802.11-11/0489r0
Submission
Portable Networks – Average Number of WLAN Channels
• Average (Mean) number of 10/20 MHz WLAN Channels
PHY Mean Number of 10 MHz WLAN Channels
10 5.4
5+5 8.4
PHY Mean Number of 20 MHz WLAN Channels
20 1.4
10+10 2.5
5+5+5+5 4.0
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 12
doc.: IEEE 802.11-11/0489r0
Submission
Fixed/Portable Nets – Number of 10 MHz WLAN Channels
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 13
doc.: IEEE 802.11-11/0489r0
Submission
Fixed/Portable Nets – Number of 20 MHz WLAN Channels
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 14
doc.: IEEE 802.11-11/0489r0
Submission
Fixed/Portable Nets – Average Number of WLAN Channels
• Average (Mean) number of 10/20 MHz WLAN Channels
PHY Mean Number of 10 MHz WLAN Channels
10 2.2
5+5 3.6
PHY Mean Number of 20 MHz WLAN Channels
20 0.68
10+10 0.93
5+5+5+5 1.5
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 15
doc.: IEEE 802.11-11/0489r0
Submission
Conclusions• 20 MHz WLAN Channels
– Very unlikely to have 20 MHz continuous
– Must use either 10+10 PHY or 5+5+5+5 PHY
– 10+10 PHY will have carrier sense coexistence problems with 5MHz PHY
– 5+5 PHY will not have carrier sense coexistence problem with 5MHz PHY
• 10 MHz WLAN Channels– Reasonable number of 10 MHz channels using adjacent channels
– 10 MHz PHY will have carrier sense coexistence problem with 5MHz PHY
– If we use 5+5 PHY there are about 50% more 10MHz channels, on the average
– 5+5 PHY will not have carrier sense coexistence problem with 5MHz PHY
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 16
doc.: IEEE 802.11-11/0489r0
Submission
References
1. Mubaraq Mishra and Anant Sahai, “How much white space is there?” EECS Department, University of California, Berkeley, Technical Report No. UCB/EECS-2009-3, January 11, 2009 (available at http://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-3.html)
Steve Shellhammer, Qualcomm Inc.Slide 17
March 2011
doc.: IEEE 802.11-11/0489r0
Submission
AnnexStudy of 50 Largest Cities in the US
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 18
doc.: IEEE 802.11-11/0489r0
Submission
Portable 10 MHz Channel Results – Cities 1-20City Zip Code Number of 10 MHz Channels
(10)Number of 10 MHz Channels
(5+5)New York 10001 2 3Los Angeles 90004 1 3Chicago 60601 3 6Houston 77010 1 4Phoenix 85013 4 6Philadelphia 19103 2 3San Antonio 78203 3 5San Diego 92105 7 9Dallas 75201 0 3San Jose 95112 1 2Detroit 48203 4 6San Francisco 94002 0 1Jacksonville 32205 7 8Indianapolis 46201 2 7Austin 78704 6 7Columbus 43204 5 8Fort Worth 76105 0 3Charlotte 28202 4 6Memphis 38103 5 8Boston 02108 2 5
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 19
doc.: IEEE 802.11-11/0489r0
Submission
Portable 10 MHz Channel Results – Cities 21-40City Zip Code Number of 10 MHz Channels
(10)Number of 10 MHz Channels
(5+5)Baltimore 21204 3 5El Paso 79901 9 11Seattle 98110 4 8Denver 98101 4 8Nashville 37201 8 9Milwaukee 53202 6 7Washington 20001 3 4Las Vegas 89103 1 4Louisville 40202 5 9Portland 97201 6 9Oklahoma City 73102 6 8Tucson 85708 3 7Atlanta 30305 5 5Albuquerque 87102 3 6Kansas City 64101 7 8Fresno 93701 7 9Mesa 85202 3 5Sacramento 95815 6 7Long Beach 90802 2 5Omaha 68104 8 10
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 20
doc.: IEEE 802.11-11/0489r0
Submission
Portable 10 MHz Channel Results – Cities 41-50
City Zip Code Number of 10 MHz Channels(10)
Number of 10 MHz Channels(5+5)
Virginia Beach 23451 5 9Miami 33109 1 4Cleveland 44102 5 8Oakland 94601 0 1Raleigh 27605 4 6Colorado Springs 80904 2 5Tulsa 74104 6 8Minneapolis 55401 7 9Arlington 76002 0 3Honolulu 96813 4 7
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 21
doc.: IEEE 802.11-11/0489r0
Submission
Portable 20 MHz Channel Results – Cities 1-20City Zip Code Number of 20 MHz
Channels(20)
Number of 20 MHz Channels(10+10)
Number of 20 MHz Channels(5+5+5+5)
New York 10001 0 1 1Los Angeles 90004 0 0 1Chicago 60601 0 1 3Houston 77010 0 0 2Phoenix 85013 1 2 3Philadelphia 19103 0 1 1San Antonio 78203 0 1 2San Diego 92105 2 3 4Dallas 75201 0 0 1San Jose 95112 0 0 1Detroit 48203 1 2 3San Francisco 94002 0 0 0Jacksonville 32205 2 3 4Indianapolis 46201 0 1 3Austin 78704 1 3 3Columbus 43204 1 2 4Fort Worth 76105 0 0 1Charlotte 28202 0 2 3Memphis 38103 0 2 4Boston 2108 0 1 2
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 22
doc.: IEEE 802.11-11/0489r0
Submission
Portable 20 MHz Channel Results – Cities 21-40City Zip Code Number of 20 MHz
Channels(20)
Number of 20 MHz Channels(10+10)
Number of 20 MHz Channels(5+5+5+5)
Baltimore 21204 0 1 2El Paso 79901 3 4 5Seattle 98110 1 2 4Denver 98101 1 2 4Nashville 37201 3 4 4Milwaukee 53202 1 3 3Washington 20001 0 1 2Las Vegas 89103 0 0 2Louisville 40202 1 2 4Portland 97201 1 3 4Oklahoma City 73102 1 3 4Tucson 85708 0 1 3Atlanta 30305 1 2 2Albuquerque 87102 1 1 3Kansas City 64101 0 3 4Fresno 93701 2 3 4Mesa 85202 0 1 2Sacramento 95815 2 3 3Long Beach 90802 0 1 2Omaha 68104 3 4 5
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 23
doc.: IEEE 802.11-11/0489r0
Submission
Portable 20 MHz Channel Results – Cities 41-50
City Zip Code Number of 20 MHz Channels
(20)
Number of 20 MHz Channels(10+10)
Number of 20 MHz Channels(5+5+5+5)
Virginia Beach 23451 1 2 4Miami 33109 0 0 2Cleveland 44102 1 2 4Oakland 94601 0 0 0Raleigh 27605 1 2 3Colorado Springs 80904 0 1 2Tulsa 74104 1 3 4Minneapolis 55401 1 3 4Arlington 76002 0 0 1Honolulu 96813 0 2 3
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 24
doc.: IEEE 802.11-11/0489r0
Submission
Fixed/Portable 10 MHz Channel Results – Cities 1-20City Zip Code Number of 10 MHz Channels
(10)Number of 10 MHz Channels
(5+5)New York 10001 0 0Los Angeles 90004 0 0Chicago 60601 0 0Houston 77010 0 0Phoenix 85013 1 2Philadelphia 19103 0 0San Antonio 78203 0 1San Diego 92105 4 5Dallas 75201 0 0San Jose 95112 0 0Detroit 48203 1 1San Francisco 94002 0 0Jacksonville 32205 2 3Indianapolis 46201 2 2Austin 78704 1 1Columbus 43204 2 2Fort Worth 76105 0 0Charlotte 28202 0 0Memphis 38103 0 2Boston 2108 0 0
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 25
doc.: IEEE 802.11-11/0489r0
Submission
Fixed/Portable 10 MHz Channel Results – Cities 21-40City Zip Code Number of 10 MHz Channels
(10)Number of 10 MHz Channels
(5+5)Baltimore 21204 0 0El Paso 79901 6 7Seattle 98110 1 1Denver 98101 1 1Nashville 37201 4 4Milwaukee 53202 0 1Washington 20001 0 0Las Vegas 89103 0 0Louisville 40202 4 4Portland 97201 1 1Oklahoma City 73102 0 1Tucson 85708 1 1Atlanta 30305 1 1Albuquerque 87102 1 1Kansas City 64101 0 0Fresno 93701 2 3Mesa 85202 0 0Sacramento 95815 1 2Long Beach 90802 0 0Omaha 68104 4 5
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 26
doc.: IEEE 802.11-11/0489r0
Submission
Fixed/Portable 10 MHz Channel Results – Cities 41-50
City Zip Code Number of 10 MHz Channels(10)
Number of 10 MHz Channels(5+5)
Virginia Beach 23451 1 2Miami 33109 0 0Cleveland 44102 0 0Oakland 94601 0 0Raleigh 27605 1 2Colorado Springs 80904 0 0Tulsa 74104 1 1Minneapolis 55401 2 2Arlington 76002 0 0Honolulu 96813 0 1
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 27
doc.: IEEE 802.11-11/0489r0
Submission
Fixed/Portable 20 MHz Channel Results – Cities 1-20City Zip Code Number of 20 MHz
Channels(20)
Number of 20 MHz Channels(10+10)
Number of 20 MHz Channels(5+5+5+5)
New York 10001 0 0 0Los Angeles 90004 0 0 0Chicago 60601 0 0 0Houston 77010 0 0 0Phoenix 85013 0 0 1Philadelphia 19103 0 0 0San Antonio 78203 0 0 0San Diego 92105 1 2 2Dallas 75201 0 0 0San Jose 95112 0 0 0Detroit 48203 0 0 0San Francisco 94002 0 0 0Jacksonville 32205 0 1 1Indianapolis 46201 0 1 1Austin 78704 0 0 0Columbus 43204 1 1 1Fort Worth 76105 0 0 0Charlotte 28202 0 0 0Memphis 38103 0 0 1Boston 2108 0 0 0
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 28
doc.: IEEE 802.11-11/0489r0
Submission
Fixed/Portable 20 MHz Channel Results – Cities 21-40City Zip Code Number of 20 MHz
Channels(20)
Number of 20 MHz Channels(10+10)
Number of 20 MHz Channels(5+5+5+5)
Baltimore 21204 0 0 0El Paso 79901 3 3 3Seattle 98110 0 0 0Denver 98101 0 0 0Nashville 37201 1 2 2Milwaukee 53202 0 0 0Washington 20001 0 0 0Las Vegas 89103 0 0 0Louisville 40202 1 2 2Portland 97201 0 0 0Oklahoma City 73102 0 0 0Tucson 85708 0 0 0Atlanta 30305 0 0 0Albuquerque 87102 0 0 0Kansas City 64101 0 0 0Fresno 93701 1 1 1Mesa 85202 0 0 0Sacramento 95815 0 0 1Long Beach 90802 0 0 0Omaha 68104 1 2 2
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 29
doc.: IEEE 802.11-11/0489r0
Submission
Fixed/Portable 20 MHz Channel Results – Cities 41-50
City Zip Code Number of 20 MHz Channels
(20)
Number of 20 MHz Channels(10+10)
Number of 20 MHz Channels(5+5+5+5)
Virginia Beach 23451 0 0 1Miami 33109 0 0 0Cleveland 44102 0 0 0Oakland 94601 0 0 0Raleigh 27605 0 0 1Colorado Springs 80904 0 0 0Tulsa 74104 0 0 0Minneapolis 55401 1 1 1Arlington 76002 0 0 0Honolulu 96813 0 0 0
March 2011
Steve Shellhammer, Qualcomm Inc.Slide 30