tag:blogger.com,1999:blog-29407058315273926362024-03-14T07:29:37.105-07:00California Drive Testing - Mobile BroadbandBlog for the CPUC's mobile field testing programRob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.comBlogger225125tag:blogger.com,1999:blog-2940705831527392636.post-22077250370019703322018-01-26T12:17:00.003-08:002018-01-26T12:18:17.796-08:00Testing Your Home Internet Connection<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEisgIxKuLT0q2Ue3pMgaU4D-5qeZbXNieoRXgg42As3BLzyx93ifCvUWZpDI_U_8mcEEXhe0w4qVpRXY7YZNLDVcccG_uadjIIFjegipc-9JJZ56RWywE5iaNpVxrLufy3M3Na-qTKcB21x/s1600/CalSPEED+box+image.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" data-original-height="1588" data-original-width="1600" height="396" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEisgIxKuLT0q2Ue3pMgaU4D-5qeZbXNieoRXgg42As3BLzyx93ifCvUWZpDI_U_8mcEEXhe0w4qVpRXY7YZNLDVcccG_uadjIIFjegipc-9JJZ56RWywE5iaNpVxrLufy3M3Na-qTKcB21x/s400/CalSPEED+box+image.JPG" width="400" /></a></div>
Ever wondered how fast your internet speed is at home? Sure, you can use speed test web sites, but do you know how much your speed varies depending on what sites you visit?<br />
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For instance, did you know that going to a site on the east coast from your home on the west coast can slow down your speed by more than 50%?<br />
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I have Comcast for my home service, and my plan offers up to 75 megabits per second, which is over 18 times faster than what I get at work (more on that later). The tests that ran over last night revealed that when my connection went to a west coast server, I got as high as 92 megabits per second, but when it went to an east coast server, my speed dropped to around 39 megabits per second. Moreover, the difference in round trip time (latency), is huge. West coast latency averaged 17 milliseconds, while east coast latency was in the mid-80s. Generally speaking, if your latency is below 100 milliseconds, your internet service can support real-time streaming services (assuming other factor such as packet loss and jitter are within range).<br />
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As you can tell from the DIY-looking box in the image above, we're still alpha testing the home measurement device, and we hope to have production versions available for volunteers by 2Q 2018.<br />
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Here's a summary of my results:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1RyrTlTo1ks3N14p8tVSxIAdyy-FmMiXuO4DhocE8ITzQ9B4ldi1t2j-MRNsdVtE-o0SmomwfnpuB2aIDjb1eePakCk8op236avncwcY23n5eWvOzgIny5Xp06S71hYPkzfFzZ649VUQm/s1600/CalSPEED+Home+Test+Summary.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" data-original-height="466" data-original-width="737" height="403" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1RyrTlTo1ks3N14p8tVSxIAdyy-FmMiXuO4DhocE8ITzQ9B4ldi1t2j-MRNsdVtE-o0SmomwfnpuB2aIDjb1eePakCk8op236avncwcY23n5eWvOzgIny5Xp06S71hYPkzfFzZ649VUQm/s640/CalSPEED+Home+Test+Summary.JPG" width="640" /></a></div>
<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-91068020037301852792017-06-27T16:15:00.000-07:002017-06-27T16:15:06.574-07:00Spring Field Testing Week 4<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlSrYMIZ4o-hLqJSVklXWJxDMdAJPCNjcsXsTXKDqOtrd6pM50jT_zD-0hxBKcBYre9NB7YTq5KMY5NwtTKBSHib_SZboF9A1PU8NlvDuSCPlkk4Kf_8Lz_JQXWV6mn6zZ9ti9Pk1IK9FS/s1600/Nine+in+a+row.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="775" data-original-width="771" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlSrYMIZ4o-hLqJSVklXWJxDMdAJPCNjcsXsTXKDqOtrd6pM50jT_zD-0hxBKcBYre9NB7YTq5KMY5NwtTKBSHib_SZboF9A1PU8NlvDuSCPlkk4Kf_8Lz_JQXWV6mn6zZ9ti9Pk1IK9FS/s400/Nine+in+a+row.JPG" width="397" /></a></div>
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We're entering the last week of field testing with only the northern part of Central Valley and Orange County. Average speeds appear to be very similar to those from last fall.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2v6sw06mf6n9tifMQBpxzp4RAUzvgBU_xSZXCBn8s73D0cDL3EAItZBWcJFSpBUPFsSMIPnCGldbdsIhHAQxoaRYPC84UeA9lP8d_KwIHANfgIBKXVDFhhnY336x4oqQIB49NgSPXEoUx/s1600/Round+11+Week+4+averages.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="155" data-original-width="497" height="123" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2v6sw06mf6n9tifMQBpxzp4RAUzvgBU_xSZXCBn8s73D0cDL3EAItZBWcJFSpBUPFsSMIPnCGldbdsIhHAQxoaRYPC84UeA9lP8d_KwIHANfgIBKXVDFhhnY336x4oqQIB49NgSPXEoUx/s400/Round+11+Week+4+averages.JPG" width="400" /></a></div>
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Compare the above speeds to those from last fall's: </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNuV8dVzy3WAH4c7WLgln4YvF3bIonw3ntsK8Tc8gknrPYRtkM52sEwgCZnehSaU8wIEdfp3JOUsAne22LL5k-n88nmQJXF-r9y27SpsE0LT279q0B66FsTz4noQssoUNNfxs1_38LLV1R/s1600/Round+10+Week+4.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="151" data-original-width="492" height="122" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNuV8dVzy3WAH4c7WLgln4YvF3bIonw3ntsK8Tc8gknrPYRtkM52sEwgCZnehSaU8wIEdfp3JOUsAne22LL5k-n88nmQJXF-r9y27SpsE0LT279q0B66FsTz4noQssoUNNfxs1_38LLV1R/s400/Round+10+Week+4.JPG" width="400" /></a></div>
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The progress map below shows completed locations in red and upcoming in blue.</div>
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-74520953582816068852017-06-19T17:03:00.002-07:002017-06-19T17:03:41.838-07:00Spring 2017 Testing - Week 3<br />
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Week 3 Status: Red = completed test locations, Blue = soon-to-be-tested<br />
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgaD1Kt6GEZoguqlv-YSe1IBeLa8mVtV67SB77hk47hKkAahNUwd34ZIiPaHUYsdO3IE-c7rQqOUgTu6q3VrJoK_38rcs1GciYtk1PMEAXqW1vT8f5-K2mqNX87g380mytbYjqFRceJ0ro8/s1600/Testing+Locations+End+Week+3+Map.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="859" data-original-width="661" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgaD1Kt6GEZoguqlv-YSe1IBeLa8mVtV67SB77hk47hKkAahNUwd34ZIiPaHUYsdO3IE-c7rQqOUgTu6q3VrJoK_38rcs1GciYtk1PMEAXqW1vT8f5-K2mqNX87g380mytbYjqFRceJ0ro8/s640/Testing+Locations+End+Week+3+Map.JPG" width="491" /></a><br />
<span id="goog_1289655827"></span>Coming into Week 4 of Spring 2017 mobile field testing, our drivers have compiled a large collection of memorable photos. Follow them on Instagram at: cpuc_broadband_testing<br />
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Here is a sample of some of their work.<br />
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Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-23846671399154058852017-06-12T15:45:00.000-07:002017-06-12T16:00:53.491-07:00CalSPEED Testing in France<div class="separator" style="clear: both; text-align: left;">
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I traveled to Montpellier France three weeks ago and bought a
prepaid SIM from SFR (France's #2 mobile carrier) for my unlocked iPhone. Montpellier is France's fastest growing city and its 8th largest. Here are the speed test results from
CalSPEED from a test I ran near the Place de la Comedie, pictured below. </div>
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As we saw with 3G/HSDPA technology in California, ping times were long,
between 342 and 347 milliseconds, and hampered real-time streaming
capabilities. Granted, my phone was pinging servers on the east and west
coasts of the United States, but if I were using LTE instead of 3G, I
would expect the ping times to be in the range of 150-200 milliseconds for CalSPEED.<br />
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This was my first time using a prepaid SIM from a local carrier, and, not knowing how much data to buy in advance, I bought 20 gigabytes. I thought that would be fine for two and a half weeks of exploring the Languedoc area. To my surprise, by the end of my stay I had only used just over 1 gigabyte, and that was with heavy daily usage. Rather than data, it was battery life that ended up being the limiting factor.<br />
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Montpellier has a large student population and there are many new cafes catering to them. Pictured below is a sandwich board written in English, tongue-in-cheek. <br />
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The writer Rabelais was an ordained monk and practicing physician, and he taught for a few years at the Montpellier medical college, one of France's oldest.<br />
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-91274903342008196472017-03-14T17:06:00.001-07:002017-03-14T17:06:16.558-07:00Mobile Field Test Data Gets A Face LiftWe're beta testing a new visualization tool for the California Interactive Broadband Map that displays Rounds 6-10 of our mobile field test data. Below are images from the beta site. The graphics are interactive, so you can select different parts of the charts and drill down to more specifics, such as 1XRTT only (shown below).<br />
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-28108414188954639372017-01-13T16:01:00.003-08:002017-01-13T16:15:42.024-08:00T-Mobile Latest: A “Fire Chicken?”<!--[if gte mso 9]><xml>
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With the winter holiday season behind us, it’s time to move that
unsold inventory, time to repackage those frozen turkeys as “fire chickens” and
call them “fresh." <br />
<br />
Fierce Wireless <a href="http://www.fiercewireless.com/wireless/t-mobile-killed-binge-and-hatched-a-whole-new-set-problems">reported in August last year</a> that T-Mobile was replacing its Binge-On sponsored data service with
something called “<a href="https://explore.t-mobile.com/t-mobile-one?icid=WMM_TM_Q117UCNXT_MHEHP4Y934W7224">T-Mobile
One</a>.” The new service includes unlimited data. However, as with any
unlimited plan, the big question is, “Unlimited data at what speed and quality?”
Unlimited data at 2.5G or 3G speeds is akin to washing your automobile with a
teacup.<br />
<br />
<div class="MsoNormal">
As I <a href="http://calbroadbanddrivetest.blogspot.com/2016/03/monday-evening-sushi-buffet-t-mobiles.html">blogged</a>
last March, T-Mobile’s Binge-On sponsored data plan let you stream music and
video from select content providers without incurring extra data charges, but the
only way to get HD-quality streaming video was by disabling Binge-On, because T-Mobile
throttled video streaming to 480 pixels (also known as “SD” for “standard
definition”).</div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
It’s no surprise that the Binge-On successor, T-Mobile One, by
default only delivers SD quality video. If you want HD quality (720-1080 pixels),
you have to pay $25 extra. The only difference between Binge-On and T-Mobile One
seems to be the latter lets you stream any content (not just T-Mobile’s
preferred providers), and it costs more. Also, just to make sure “unlimited
data” doesn’t give people crazy ideas, T-Mobile limits tethering to 3G speeds
and also says they’ll throttle anyone who streams more than 28 gigabytes per
month (that’s a lot of data, by the way).</div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
Image: Read the fine print!</div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiU9r_ZFv6aWouByYX2XKzePL9-J5euOuoXXZyBm_-fVgMZyrHHHLlNBMW1_taynK-VK9sv4odHmlIhViitEnC0YcmK_GHVGCo-PGbYn7EBU5MJLFU4aZ-7oPZ6ZRRYsfh66Q_IDdywtucV/s1600/T-Mobile+fine+print.JPG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="321" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiU9r_ZFv6aWouByYX2XKzePL9-J5euOuoXXZyBm_-fVgMZyrHHHLlNBMW1_taynK-VK9sv4odHmlIhViitEnC0YcmK_GHVGCo-PGbYn7EBU5MJLFU4aZ-7oPZ6ZRRYsfh66Q_IDdywtucV/s640/T-Mobile+fine+print.JPG" width="640" /></a></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
Read the fine print: “On all T-Mobile plans, during
congestion the top 3% of data users (>28GB/mo.) may notice reduced speeds
until next bill cycle. Video typically streams on smartphone/tablet at DVD
quality (480p). Tethering at Max 3G speeds. Sales tax and regulatory fees
included in monthly service price.”</div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
Here is an updated image of estimated streaming video
quality based on the interpolated spring 2016 field test results. The January
2016 blog post showing estimated streaming video quality using 2015 field test
data is <a href="http://calbroadbanddrivetest.blogspot.com/2016/01/binge-on-binge-off.html">here</a>.</div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpgbVkig_W4HoOirnqfMyIkyBGas9nbscut-W7cAeIcQVHYpZYpiJiBNtcJ04xsPIj7u9ZNfdGkqR6nQJCSKkmE2BOtrGiFQqzAXN-Kce8aYNHt0Aj7pIAKxG0_cyJUJJBdu_FTPKKmZ-p/s1600/T-Mobile+Spring+2016+video+stream+west+coast.JPG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpgbVkig_W4HoOirnqfMyIkyBGas9nbscut-W7cAeIcQVHYpZYpiJiBNtcJ04xsPIj7u9ZNfdGkqR6nQJCSKkmE2BOtrGiFQqzAXN-Kce8aYNHt0Aj7pIAKxG0_cyJUJJBdu_FTPKKmZ-p/s640/T-Mobile+Spring+2016+video+stream+west+coast.JPG" width="520" /></a></div>
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<span style="mso-no-proof: yes;"><br /></span></div>
<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-71806976708641971622016-12-02T16:03:00.000-08:002016-12-09T10:08:52.451-08:00Connect America Fund Layer Now Available on CA Interactive BB Map<br />
<div class="separator" style="clear: both; text-align: left;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGGeK1wOJQvFep-vuCP0riNccsD8MztS5qVqwiT0dp5DmP7F-Iaf_KtclyjASkqa7PwlAAqa2Jmrlloborrs7PYMxiIRSfAoeXlsYTXE1frFl4-Bmq-6XS0i-4g6gKyRtUcC7mCO-GIVIo/s1600/Leyendo.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGGeK1wOJQvFep-vuCP0riNccsD8MztS5qVqwiT0dp5DmP7F-Iaf_KtclyjASkqa7PwlAAqa2Jmrlloborrs7PYMxiIRSfAoeXlsYTXE1frFl4-Bmq-6XS0i-4g6gKyRtUcC7mCO-GIVIo/s1600/Leyendo.JPG" /></a>As a follow up to my November 1 post on AT&T's plans to deploy
wireless local loops as part of their obligations under Connect America
Fund Phase II (see "<a href="http://calbroadbanddrivetest.blogspot.com/2016/11/hello-wireless-loops-goodbye-fiber-part.html">Hello Wireless Loops. Goodbye Fiber? Part 2</a>"), the Connect America Fund Phase II eligible areas are now loaded onto the <a href="http://www.broadbandmap.ca.gov/">California Interactive Broadband Map</a>. As shown in the legend to the left, four carriers' territories are shown in light blue (AT&T), dark blue (Consolidated), gray (Frontier), and red (Verizon, now also Frontier). To view the areas, go to the map's menu on the right and expand the FCC Data menu. Check the box next to "Connect America Fund Phase II Locations."</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhi9E6el78mvwCSV5ETsVQa_BxQhgyWx3_edKS-HDxbYy5nVoDwZBFiHeNTQiUuvH7ZsBOKIUZ0Ae-FMZPlhw8akOeRg4c-lR_oAGjbjRiYSnDk1sAubfoTC-oXbhXQwaMTjkxqn3ceNswD/s1600/CAFII+CAM43-NORCal.JPG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="614" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhi9E6el78mvwCSV5ETsVQa_BxQhgyWx3_edKS-HDxbYy5nVoDwZBFiHeNTQiUuvH7ZsBOKIUZ0Ae-FMZPlhw8akOeRg4c-lR_oAGjbjRiYSnDk1sAubfoTC-oXbhXQwaMTjkxqn3ceNswD/s640/CAFII+CAM43-NORCal.JPG" width="640" /></a></div>
<br />
<table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: right; margin-left: 1em; text-align: right;"><tbody>
<tr><td style="text-align: center;"><br /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Connect America Fund Phase II Eligible Census Blocks by Carrier</td></tr>
</tbody></table>
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-14405160509442181472016-12-02T14:58:00.002-08:002016-12-02T14:59:25.748-08:00CalSPEED iPhone Ver 1.1.1 Now Available on iTunes<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyu_JLU4h4GXg69vEhzF6ih0tM0J6Jfsrgapd3LCmD_RYD0cZQvB755wHV3KqjvpT_qd_Z0993LesT1AO8teMPpyTuCLl3Gm0H7BH4XB14IuEc4AAEo7xfoC2TrKSH-jeyQ15WWX13mpnb/s1600/CalSPEED+iPhone+1.1.1+Begin+test.PNG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyu_JLU4h4GXg69vEhzF6ih0tM0J6Jfsrgapd3LCmD_RYD0cZQvB755wHV3KqjvpT_qd_Z0993LesT1AO8teMPpyTuCLl3Gm0H7BH4XB14IuEc4AAEo7xfoC2TrKSH-jeyQ15WWX13mpnb/s320/CalSPEED+iPhone+1.1.1+Begin+test.PNG" width="179" /></a></div>
We've made some improvements to CalSPEED with the iPhone version 1.1.1. Changes include:<br />
<br />
<ul>
<li>Clearer indoor/outdoor slider</li>
<li>WiFi reminder screen if device is connected to WiFi</li>
<li>California and Virginia server testing segments indicated at bottom </li>
<li>Streaming video quality indicator added to results summary</li>
<li>Results history shows video streaming and Mean Opinion Score (MOS) estimate for over the top service</li>
</ul>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjo0JAkr75zBnVSTzB93ObTkqqRL6AOX_A0TWrpJinYjEzkQL-jH00hW2kVxBjDbsIk-gmvy43H67YgC53vSwULD3SkQg092-0b0C4araZXNIvoUCOMCBgh-yRE8C7GrUZ8s6A-rzOHnK3O/s1600/CalSPEED+iPhone+1.1.1+Calif+Server.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjo0JAkr75zBnVSTzB93ObTkqqRL6AOX_A0TWrpJinYjEzkQL-jH00hW2kVxBjDbsIk-gmvy43H67YgC53vSwULD3SkQg092-0b0C4araZXNIvoUCOMCBgh-yRE8C7GrUZ8s6A-rzOHnK3O/s320/CalSPEED+iPhone+1.1.1+Calif+Server.PNG" width="179" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTQ5MmG8WbmhTjFjkryuEGsfooo87GtBfcFJKF3iHKeZx401-JhTv2mUiUXlqJn9LsTxYBJ02lVx_EeS47pLvtIJxwFfplqWV4FdF9Rcl00pg0FD-8JbjWGIqtO60I6lL7Hesqr9r1PoW3/s1600/CalSPEED+iPhone+1.1.1+Virginia+Server.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTQ5MmG8WbmhTjFjkryuEGsfooo87GtBfcFJKF3iHKeZx401-JhTv2mUiUXlqJn9LsTxYBJ02lVx_EeS47pLvtIJxwFfplqWV4FdF9Rcl00pg0FD-8JbjWGIqtO60I6lL7Hesqr9r1PoW3/s320/CalSPEED+iPhone+1.1.1+Virginia+Server.PNG" width="179" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiOF-aorbxeJdoc4FhFC377U3RdlavhAymr3bCLVLGKz7pYSCw6zfBL2QpCXdpdp-i9NBmh-bkO4Zcr7HJvAQqFdbqYhTkNcPijqafrZp2_i_07mRZlrTkqFCSyHqS8z0Wk-8Rh4oIxgjfR/s1600/CalSPEED+iPhone+1.1.1+Results+scorecard.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiOF-aorbxeJdoc4FhFC377U3RdlavhAymr3bCLVLGKz7pYSCw6zfBL2QpCXdpdp-i9NBmh-bkO4Zcr7HJvAQqFdbqYhTkNcPijqafrZp2_i_07mRZlrTkqFCSyHqS8z0Wk-8Rh4oIxgjfR/s320/CalSPEED+iPhone+1.1.1+Results+scorecard.PNG" width="179" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5SAIYBo9ej8MbEEDCCsUeMnNdR-VHEUIIJjGZRjc2tVXYGXmppoP0MHPmnSJco3ZMctcZw-dQqGzAFg6GBGtB6Dtit4nI-kDKq_kvTn01c8itzxQk21RhC9fTQyznS44ymfxRUefBCs-C/s1600/CalSPEED+iPhone+1.1.1+results+summary.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5SAIYBo9ej8MbEEDCCsUeMnNdR-VHEUIIJjGZRjc2tVXYGXmppoP0MHPmnSJco3ZMctcZw-dQqGzAFg6GBGtB6Dtit4nI-kDKq_kvTn01c8itzxQk21RhC9fTQyznS44ymfxRUefBCs-C/s320/CalSPEED+iPhone+1.1.1+results+summary.PNG" width="179" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsdhhpjH3dFsUT5ox4535cv7TxSWEgoQcCQt67K5NW-celNFMVjE1cYqBx98R5GJRvAUWCIOETqYlmiSfLPf0PBZ424zBli4QYFP50hpUoYFJSOFAYhJzXr2oAl69ef5v4gwsusEL8e5_f/s1600/CalSPEED+iPhone+1.1.1+results+detail.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsdhhpjH3dFsUT5ox4535cv7TxSWEgoQcCQt67K5NW-celNFMVjE1cYqBx98R5GJRvAUWCIOETqYlmiSfLPf0PBZ424zBli4QYFP50hpUoYFJSOFAYhJzXr2oAl69ef5v4gwsusEL8e5_f/s320/CalSPEED+iPhone+1.1.1+results+detail.PNG" width="179" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhpQEBsV4N9AVfg4wFozSyBW0WmtnSfAlIqFi7NKjqFHn3wQQQ5YErQJIK7TSsVz0yuRXCC4vCG6jXFZjuj2JnRtDvUD5LTaxOVUJBypHHJ9J4hKYK3rthDaNTDHb34y1GBmv2CMUZuGRyO/s1600/CalSPEED+iPhone+1.1.1+Fixed+BB+avail+2.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhpQEBsV4N9AVfg4wFozSyBW0WmtnSfAlIqFi7NKjqFHn3wQQQ5YErQJIK7TSsVz0yuRXCC4vCG6jXFZjuj2JnRtDvUD5LTaxOVUJBypHHJ9J4hKYK3rthDaNTDHb34y1GBmv2CMUZuGRyO/s320/CalSPEED+iPhone+1.1.1+Fixed+BB+avail+2.PNG" width="179" /></a></div>
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-41716901799548025972016-11-21T14:20:00.004-08:002016-11-22T16:59:35.327-08:00New to CalSPEED? Frequently Answered Questions<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigooa3wjZPKRoAt-Wy3fUGArSlq-NQ5kQE3NKobwKMQihT2Ocjk55QOSWKV0zCHmxEIEq3VLe_48DmG1t4Sz-x6gPdmyJG7hzgIteWZu0ukgmUUevOquQtVu3n1ieSHYgesFZPrq3Oo_Fl/s1600/big-i-1239160.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="200" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigooa3wjZPKRoAt-Wy3fUGArSlq-NQ5kQE3NKobwKMQihT2Ocjk55QOSWKV0zCHmxEIEq3VLe_48DmG1t4Sz-x6gPdmyJG7hzgIteWZu0ukgmUUevOquQtVu3n1ieSHYgesFZPrq3Oo_Fl/s200/big-i-1239160.jpg" width="133" /></a></div>
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</div>
<div class="MsoListParagraphCxSpMiddle" style="text-align: left; text-indent: -0.25in;">
Those of you new to CalSPEED often ask how it compares to other speed
testing apps. Here are answers to some of the more common questions.<b> </b></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l2 level1 lfo1; text-indent: -.25in;">
<b> </b></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l2 level1 lfo1; text-indent: -.25in;">
<b> How Did CalSPEED Begin?</b><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"><b> </b>CalSPEED was originally funded by a State Broadband
Initiative grant from the National Telecommunications and Information
Administration. The testing program began in spring 2012 and has now completed
10 rounds. The test program collects not only speed data, but also speed
variation, latency, jitter, and packet loss. With these data, we are able to
estimate performance for “over-the-top” streaming voice and video service. With ten rounds of semi-annual mobile testing completed, the CPUC has one of the largest public data sets of mobile broadband performance.</span></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l2 level1 lfo1; text-indent: -.25in;">
<br /></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l2 level1 lfo1; text-indent: -.25in;">
<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"><b> Where Are Tests Performed? </b>The CPUC tests the same 1,990 locations twice a year. The
breakdown is 37% urban locations, 56% rural locations, and 7% tribal locations, which were randomly generated.
The field test relies on two devices from four major providers (AT&T,
Sprint, T-Mobile, and Verizon). 80 TCP tests are performed for each provider,
on each device, at each of the 1,990 locations.</span></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l2 level1 lfo1; text-indent: -.25in;">
<br /></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l2 level1 lfo1; text-indent: -.25in;">
<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"> <b>Is 1,990 Locations Enough? </b></span><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;">Using advanced geo-statistical
methods, we are able to<span style="mso-spacerun: yes;"> </span>interpolate
service characteristics likely to be experienced by a user located anywhere in
the state.</span> T<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-family: Calibri; mso-bidi-font-size: 11.0pt; mso-bidi-theme-font: minor-latin;">he CPUC
designed the mix of test locations to cover not only urban places where people
live and work, but also rural locations where people may be passing through,
such as rural highways and state and national parks. All tests are performed
along roads navigable by automobile.</span><br />
<br /></div>
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<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhvtmGcejxojPeaPhXYvk4-AQUA33qN7kfnx2n5oc9dkMqEboUvsidYZcRLCXrwEJ1Wo8qQpjFbUq-F0KXAMN2k2nETowfDJnFxKu_Ml5tlGM0-HUZvxBI6KxmdT3mXB9TqshBa9sAo0YwN/s1600/navigating-gps-maps-1466837.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="132" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhvtmGcejxojPeaPhXYvk4-AQUA33qN7kfnx2n5oc9dkMqEboUvsidYZcRLCXrwEJ1Wo8qQpjFbUq-F0KXAMN2k2nETowfDJnFxKu_Ml5tlGM0-HUZvxBI6KxmdT3mXB9TqshBa9sAo0YwN/s200/navigating-gps-maps-1466837.jpg" width="200" /></a></div>
<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"> <b>Why Not Test In Every Census Block?</b> </span><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-family: Calibri; mso-bidi-font-size: 11.0pt; mso-bidi-theme-font: minor-latin;">Performing
field tests in all of California’s 710,145 census blocks would be prohibitively
expensive, impractical and unnecessary. For this reason, neither the CPUC nor
mobile providers like Verizon, AT&T, T-Mobile, and Sprint perform tests in
every census block, but instead use statistical techniques to approximate
service characteristics in between tested locations<span style="mso-list: Ignore;">.</span></span></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l2 level1 lfo1; text-indent: -.25in;">
<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"></span></div>
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<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"> </span></div>
<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"><b> Why Two Servers?</b> Most testing applications use only one, generally nearby, server.<span style="mso-spacerun: yes;"> </span>This method understates latency and overstates
throughput as compared to using multiple, geographically-diverse servers.Testing to a nearby server results in speeds
likely to be experienced for applications such as streaming movies, where
content is often cached locally due to its popularity. <span style="mso-spacerun: yes;"> </span>However, much of the content broadband users
access is not cached locally, so CalSPEED tests two two servers -- one in Arlington, Virginia, the other in San Jose, California -- to
understand the role of back haul networks in each provider’s delivery of mobile
broadband. While using more than two test servers in disparate locations
across the globe would be desirable, using both east coast and west coast
servers yields more representative results that testing to only one
server.</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigAiyEyjq-PKa51bODQWVcjfsWUkxSQxD7hntiS7hCd6nMMrykopMDfvMNeWhO6IScFtlupxUytOeg6vuiMGi8-S85D6uZb4A_ylZlDTSqiN8mpeX8x7PXtx70xic6FyFipmTJbz3dy6E9/s1600/servers-1487938.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigAiyEyjq-PKa51bODQWVcjfsWUkxSQxD7hntiS7hCd6nMMrykopMDfvMNeWhO6IScFtlupxUytOeg6vuiMGi8-S85D6uZb4A_ylZlDTSqiN8mpeX8x7PXtx70xic6FyFipmTJbz3dy6E9/s200/servers-1487938.jpg" width="200" /></a></div>
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<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"><b>Is This Better Than SpeedTest.net or the FCC's Speed Test?</b> As shown in
a </span><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;">study</span><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"> published
by Novarum in 2014 comparing Ookla, FCC, and CalSPEED testing applications,
results for Ookla and FCC tests tend to be higher because both intentionally
select test servers for lowest latency, which tend to be geographically closer.
Moreover, Ookla’s test further biases results by discarding the bottom half of
upstream results and bottom third of downstream results. By consistently
testing to the same two servers, one on each coast of the continent, CalSPEED
provides a reliable backhaul performance metric for each of the four mobile
providers. Since we began testing in 2012, we have seen the performance
(latency) difference between east and west servers decrease.</span><br />
<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"> </span><br />
<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"><b>How Else Does CalSPEED Differ From Other Speed Tests? </b>Most speed test applications rely on crowd sourcing. Crowd
sourcing has an inherent selection bias of only collecting data from where it
is chosen to be used. Where data is collected, it is biased towards who
collected it, why, when and where. In contrast, the CalSPEED methodology has
testers return to the same location every time, and the geographic distribution
of test locations provides a more complete picture of mobile broadband across
the state.</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgI-pj6hvarWvOEjd7SSRZrsQ2UVIqfZCUetRxVywhx3fskE5TNBrIhRD1_VMe5HNJsB_gYl78qwJkcIPX-W0pqDtyY_yxQVRFzah5U_nI3BqUB3Uk48T8nrkDy4eZJEKrFTy2MA-3A8jcy/s1600/needle-and-thread-1419657.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="133" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgI-pj6hvarWvOEjd7SSRZrsQ2UVIqfZCUetRxVywhx3fskE5TNBrIhRD1_VMe5HNJsB_gYl78qwJkcIPX-W0pqDtyY_yxQVRFzah5U_nI3BqUB3Uk48T8nrkDy4eZJEKrFTy2MA-3A8jcy/s200/needle-and-thread-1419657.jpg" width="200" /></a></div>
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<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"><b><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;">How Many TCP Threads Does CalSPEED Use?</span></b><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"></span></span><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-family: Calibri; mso-bidi-font-size: 11.0pt; mso-bidi-theme-font: minor-latin;"><span style="mso-list: Ignore;"><span style="font: 7.0pt "Times New Roman";"></span></span></span><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-family: Calibri; mso-bidi-font-size: 11.0pt; mso-bidi-theme-font: minor-latin;"><span style="mso-list: Ignore;"><span style="font: 7.0pt "Times New Roman";"> </span></span></span><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;">Multi-threading
means opening more than one connection to the host and combining them in order
to boost overall throughput and is used by many speed test applications. When
the CPUC designed CalSPEED, we examined the effect of using multiple threads
(“flows”) and concluded there was no material difference in mobile throughput
between four threads versus eight threads or sixteen threads. The current test
design has 4 threads, each divided into ten 1-second tests for upstream to the
west server, then again to the east server. The same is true for downstream.
This is then repeated a second time, totaling eighty 1-second tests. Most applications only use one thread.</span><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-family: Calibri; mso-bidi-font-size: 11.0pt; mso-bidi-theme-font: minor-latin;"> </span><br />
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<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-family: Calibri; mso-bidi-font-size: 11.0pt; mso-bidi-theme-font: minor-latin;"><b>Why Do Speed Testing? Carriers Already Have Coverage Maps. </b></span><span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;">Most provider maps show a single coverage color and say things like "4G/LTE Coverage." Through CalSPEED, the CPUC has been able to discern more subtle speed and coverage differences by region. Some
providers advertise speeds, but we have observed that those speeds are not
ubiquitous, that is, they are not available everywhere providers claim to offer
service. Speeds vary
widely depending on if you are in an urban, rural, or tribal location. For this
reason, we create a heat map of speeds based on actual field test data, and the
heat map shows how speeds vary across the state.<b> </b></span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjaMY-aoZ5aGIhdTiShQjjAEfXrZ5ZTFFkf1nSLOTS-RdyGflddxRSfEQqG6n95hclyZW3I2rKNrFT77THL2lkg6CLuyfKIY1mNHzCMaWa7YZPycqUEel3-Jpe_0mmwEtPlPJnCGQy1vt1p/s1600/bright-idea-1191075.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="160" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjaMY-aoZ5aGIhdTiShQjjAEfXrZ5ZTFFkf1nSLOTS-RdyGflddxRSfEQqG6n95hclyZW3I2rKNrFT77THL2lkg6CLuyfKIY1mNHzCMaWa7YZPycqUEel3-Jpe_0mmwEtPlPJnCGQy1vt1p/s200/bright-idea-1191075.jpg" width="200" /></a></div>
<span style="font-size: 12.0pt; line-height: 115%; mso-bidi-font-size: 11.0pt;"><b>Why Not Use Average Speed, Like Mean or Median? </b>The CPUC has
demonstrated<a href="https://www.blogger.com/blogger.g?blogID=2940705831527392636#_ftn1" name="_ftnref1" style="mso-footnote-id: ftn1;" title=""><span class="MsoFootnoteReference"><span style="mso-special-character: footnote;"><span class="MsoFootnoteReference"><span style="font-family: "calibri" , "sans-serif"; font-size: 12.0pt; line-height: 115%;">[1]</span></span></span></span></a>
through years of methodical field testing that mean and median speeds, by
themselves, are unreliable indicators of what consumers can expect to
experience reliably at a location.<span style="mso-spacerun: yes;"> </span>CalSPEED takes
observed variability into account to determine speeds that consumers can
consistently expect to receive.<span style="mso-spacerun: yes;"> </span>As mean
throughput increases, so does the amount of variability around the mean.<span style="mso-spacerun: yes;"></span></span><br />
<div style="mso-element: footnote-list;">
<hr align="left" size="1" width="33%" />
<div id="ftn1" style="mso-element: footnote;">
<div class="MsoFootnoteText">
<a href="https://www.blogger.com/blogger.g?blogID=2940705831527392636#_ftnref1" name="_ftn1" style="mso-footnote-id: ftn1;" title=""><span class="MsoFootnoteReference"><span style="mso-special-character: footnote;"><span class="MsoFootnoteReference"><span style="font-family: "calibri" , "sans-serif"; font-size: 10.0pt; line-height: 115%;">[1]</span></span></span></span></a>
See Section 2.4 Intra-Session Variation in “CalSPEED: California Mobile
Broadband - An Assessment - Fall 2014,” by Novarum.</div>
</div>
</div>
Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-23617142040682083202016-11-07T13:36:00.002-08:002016-11-07T13:37:53.113-08:00Complete! Fall 2016 Mobile Field Testing<div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM8v3ohiy1SCEV_CE8C3Q_l7_wOLdRSKpQCfKqbd1b7aZpYpt-vg7vmx0gnnB4gv0NjbhuUiEFQqvpX1SykmsKjY4YmgTMiA3xxY_YBR8Vlv3z8y9gO1aPiEKiAI0tvS89vo-JZzPJp7nz/s1600/communicate-2-1241946.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM8v3ohiy1SCEV_CE8C3Q_l7_wOLdRSKpQCfKqbd1b7aZpYpt-vg7vmx0gnnB4gv0NjbhuUiEFQqvpX1SykmsKjY4YmgTMiA3xxY_YBR8Vlv3z8y9gO1aPiEKiAI0tvS89vo-JZzPJp7nz/s320/communicate-2-1241946.jpg" width="284" /></a>Thank you to the field test drivers from Cal State University, <a href="http://www.csuchico.edu/">Chico</a> and Cal State University <a href="http://www.csun.edu/">Northridge</a> for finishing this 10th round of mobile field testing. Thanks also to CSU Chico's<a href="http://www.gic.csuchico.edu/GIC/"> Geographical Information Center</a> and CSU Monterey Bay's <a href="https://csumb.edu/scd">School of Computing and Design</a> for their continued support for this innovative project.<br />
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As always, we will be posting summary data on the <a href="http://cpuc.ca.gov/General.aspx?id=1778">CPUC's website</a> once it becomes available.<br />
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-65502244872428790942016-11-01T14:28:00.000-07:002016-11-07T13:43:02.741-08:00Hello Wireless Loops. Goodbye Fiber? (Part 2)<br />
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Last week, I posted three scenarios examining AT&T's mobile LTE coverage of high cost-eligible homes under the FCC's Connect America Fund Phase II program. That analysis assumed AT&T would be using their existing mobile network and licensed LTE spectrum... <br />
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<div style="text-align: center;">
<b><span style="font-size: small;">Turns out, that was a rosy assumption.</span></b></div>
<br />
<span style="font-family: inherit;">Since last Friday, I received more information from <a href="http://www.tellusventure.com/" target="_blank">Steve Blum</a> about AT&T's plans <span style="font-size: 12pt; line-height: 115%;">to
deploy wireless local loops</span> (thanks, Steve!). Rather than revisit the issues, I want to make some corrections and comments to my<a href="http://calbroadbanddrivetest.blogspot.com/2016/10/hello-wireless-loops-goodbye-fiber.html" target="_blank"> previous post</a>.</span><br />
<ol><span style="font-family: inherit;">
</span>
<li><span style="font-family: inherit;"><span style="font-family: inherit;">AT&T plans to deploy a new technology for wireless local loops whose "success in the marketplace is thus unproven." (paragraph 51 of their <a href="http://www.sec.gov/Archives/edgar/data/732717/000119312514233904/d743104d425.htm">SEC 425 filing</a>). <span style="font-size: 12pt;">For more, see #1 below.</span></span></span>
</li>
<span style="font-family: inherit;">
<span style="font-family: inherit;">
</span>
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<li><span style="font-family: inherit;"><span style="font-family: inherit;">Rather than use licensed LTE spectrum, which includes the incredibly valuable 700 MHz band, it appears AT&T will be using a <a href="http://www.dslreports.com/forum/r30925384-AT-T-rolling-out-WLL-wireless-local-loop-test-beds-near-me-in-Georgia" target="_blank">higher frequency</a> (2,300 MHz, or 2.3 GHz), which requires line of sight between cell tower and customer location. For more, see #2 below. </span></span></li>
<span style="font-family: inherit;">
<span style="font-family: inherit;">
</span>
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<li><span style="font-family: inherit;"><span style="font-family: inherit;">Other risks<span style="font-family: inherit;"> </span>include spectrum constraints on the number of subscribers who can use the service simultaneously during peak usage, and this "reduce[s] the prospects for a successful rollout by AT&T of fixed WLL as a standalone product." For more, see #3 below.</span></span></li>
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<span style="font-family: inherit;"><b>1. Did AT&T Say They'll Need More Cell Sites?</b> </span></div>
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<span style="font-family: inherit;">Group President and Chief Strategy Officer John Stankey's testimony, which is part of AT&T's <a href="http://www.sec.gov/Archives/edgar/data/732717/000119312514233904/d743104d425.htm" target="_blank">Form 425 filing</a> for the DIRECTV <span style="font-family: inherit;">acquisition</span>, states: "A fixed [wireless local loop] service requires substantial upfront investments. AT&T must install additional antennas and other equipment at each cell site in areas it seeks to serve." (paragraph 50).<span style="font-family: inherit;"> </span></span></div>
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<span style="font-family: inherit;"><br /></span></div>
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<span style="font-family: inherit;"><span style="font-family: inherit; font-size: small;"><span style="font-family: inherit;">There's no mention of needing more cell sites.<span style="font-size: 12pt;"> </span></span></span></span></div>
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<span style="font-family: inherit;"><span style="font-family: inherit; font-size: small;"><br /></span></span></div>
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<span style="font-family: inherit;"><span style="font-family: inherit; font-size: small;"><span style="font-family: inherit;"><span style="font-size: 12pt;">Modifying existing cell sites is one
thing. Acquiring, permitting, and building new sites is completely different.
As one El Dorado County supervisor says, new sites are very controversial
because of their "aesthetic downside." Aside from having to find
property and possibly develop it, there's the sticky problem of getting
community buy-in for more cell towers.</span></span><span style="font-family: inherit;"> </span></span></span></div>
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<span style="font-family: inherit;"><br /></span></div>
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<span style="font-family: inherit;"><span style="font-family: inherit;">If AT&T plans to use a higher frequency like 2,300 MHz for wireless, they will need to add cell sites. That takes time. Finding additional sites, much less building new<span style="font-family: inherit;"> ones</span>, will have a significant impact on AT&T's ability to deploy wireless local loop services in a timely manner. It also puts more pressure on local governments to expedite site approvals.<span style="font-size: 12pt;"> </span></span></span></div>
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<span style="font-family: inherit;"><span style="font-family: inherit;"><span style="font-size: 12pt;">How many new sites are needed? To
get an idea, here is <a href="https://www.youtube.com/watch?v=9ESTQwLfpQ8&feature=youtu.be"><span style="color: blue;">AT&T's presentation</span></a> to the El Dorado County
Board of Supervisors. AT&T estimates they'll need to modify 4 cell towers
and add 34 new locations -- either collocated on existing buildings or newly
constructed cell sites. 38 locations seems insufficient to serve all of El
Dorado County’s high cost-eligible CAF II households, so maybe this is the
first phase in AT&T’s five-year rollout.</span><b> </b></span></span><br />
<span style="font-family: inherit;"><br /></span>
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<div class="MsoNormal" style="line-height: normal; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto;">
<span style="font-family: inherit;"><span style="font-family: inherit;"><b>2. Frequency Matters</b><span style="font-size: 12pt;"> </span></span></span></div>
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<span style="font-family: inherit;"><span style="font-family: inherit;"><span style="font-size: 12pt;">There are solid engineering
arguments why 700 MHz is more valuable than 2,300 MHz for delivering wireless
broadband to homes. I’ll address only the line of sight argument. The larger-wavelength
700 MHz frequency penetrates buildings and foliage better than the shorter-wavelength
2,300 MHz frequency. For 2,300 MHz service to reliably deliver broadband, there
needs to be line of sight, meaning you can physically see, without obstruction,
between cell tower antenna and customer antenna. Without line of sight, service
will be less reliable than with 700 MHz. Many parts of ru<span style="font-family: inherit;">ral <span style="font-family: inherit;">California are mountainous and have trees, which makes line of sight <span style="font-family: inherit;">broadband</span> difficult and expensive to<span style="font-family: inherit;"> dep<span style="font-family: inherit;">loy.</span></span></span></span></span></span></span></div>
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<span style="font-family: inherit;"><span style="font-family: inherit;"><span style="font-size: 12pt;">Home in El Dorado County with Trees
Obstructing Line of Sight</span></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhDRQjnfzqHS0WWu05iVsVAh-pW5VUISuPvSQ8fhlDZUFtmCWW-CuBPTTAufZVFaRCBBPN1W2xgDGeu34Kbb6O-jHv2LbZIgI4S1CxBC3JeXmUT1op0_wPa5sq9-eoYU4THlmwsrML3iGVl/s1600/Line+of+Sight+diagram.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="160" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhDRQjnfzqHS0WWu05iVsVAh-pW5VUISuPvSQ8fhlDZUFtmCWW-CuBPTTAufZVFaRCBBPN1W2xgDGeu34Kbb6O-jHv2LbZIgI4S1CxBC3JeXmUT1op0_wPa5sq9-eoYU4THlmwsrML3iGVl/s400/Line+of+Sight+diagram.JPG" width="400" /></a></div>
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<span style="font-family: inherit;"><span style="font-size: 12pt;">Diagram showing non-line of sight
wireless <span style="font-family: inherit;">broadband</span>, e.g. 700 M<span style="font-family: inherit;">Hz </span></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEif8uCGlwigPXntBcvDEmtY515inXA0CKQmNDokqmMvwCfjs4uXOK1tQZMS_zDC0EiTlhcCmYLQgExOfNbiXXuMF0JWBRhMSg4g89GC8kLTg96kSEBFYz8mCrtfivZETGiK2DSBlookcvtE/s1600/Non-Line+of+Sight+diagram.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="157" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEif8uCGlwigPXntBcvDEmtY515inXA0CKQmNDokqmMvwCfjs4uXOK1tQZMS_zDC0EiTlhcCmYLQgExOfNbiXXuMF0JWBRhMSg4g89GC8kLTg96kSEBFYz8mCrtfivZETGiK2DSBlookcvtE/s400/Non-Line+of+Sight+diagram.JPG" width="400" /></a></div>
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<span style="font-family: inherit;">Credit: L-Com Connectivity, www.L-com.com<span style="font-size: 12pt;"><b> </b></span></span></div>
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<span style="font-family: inherit;"><span style="font-size: 12pt;"><b>3. Is Wireless Local Loop Service Viable Without Video?</b> </span></span></div>
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<span style="font-family: inherit;"><span style="font-size: 12pt;">AT&T’s Form 425 testimony
mentions the importance to their revenue stream of bundling broadband (through
WLL, U-Verse, or their fiber product, GigaPower) with video (through DIRECTV),
voice, and even mobile. As John Stankey stated, capacity constraints reduce the
prospects of WLL as a viable standalone service. Put another way, WLL might be
financially viable only if a subscriber opts to subscribe to video and/or
mobile as well.</span></span></div>
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<span style="font-family: inherit;"><span style="font-size: 12pt;"><span style="font-family: inherit;">T</span>he prospect of adding new satellite and cable television
subscriptions is dubious in today’s marketplace. One <a href="http://www.multichannel.com/news/telco-tv/study-41-satellite-tv-cable-customers-plan-cut-scale-back-service/408777">study</a>
claims that more than 40% of satellite and cable subscribers are planning on cutting
back or dropping their pay TV service. <span style="font-family: inherit;">Broadband data from the CPUC's 2013 annual <span style="font-family: inherit;"><a href="http://www.cpuc.ca.gov/uploadedFiles/CPUC_Public_Website/Content/Utilities_and_Industries/Communications_-_Telecommunications_and_Broadband/Service_Provider_Information/Video_Franchising/DIVCAReportSept_10_2015.pdf">report</a> on the <a href="http://www.leginfo.ca.gov/cgi-bin/displaycode?section=puc&group=05001-06000&file=5800-5970">Digital Infra<span style="font-family: inherit;">structure and </span>Video Competition <span style="font-family: inherit;">Act</span></a> <span style="font-family: inherit;">indicates that California's state video franchise holders now provide more broadband service than video service.</span></span></span></span></span><br />
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<span style="font-family: inherit;"><span style="font-size: 12pt;">That doesn’t bode well for AT&T’s
DIRECTV subscribers, some of whom may be switching to over-the-top services
like Netflix or Amazon Prime and require only a reliable internet connection to
watch shows.</span></span><span style="font-family: inherit;"><span style="font-size: 12.0pt;"> To underscore that point, </span><span style="font-family: inherit;">AT&T's <a href="http://www.sec.gov/Archives/edgar/data/732717/000119312514233904/d743104d425.htm" target="_blank">Form 425 filing</a> for the DIRECTV <span style="font-family: inherit;">acquisition</span> includes an economic <span style="font-family: inherit;">a<span style="font-family: inherit;">ss<span style="font-family: inherit;">essment<span style="font-family: inherit;">, which states "higher <span style="font-family: inherit;">Intern<span style="font-family: inherit;">et access speeds will erode the tra<span style="font-family: inherit;">ditional advantage that DIRECTV's satellite network has giv<span style="font-family: inherit;">en i<span style="font-family: inherit;">t" <span style="font-family: inherit;">over video on demand provi<span style="font-family: inherit;">ders l<span style="font-family: inherit;">ike Net<span style="font-family: inherit;">flix<span style="font-family: inherit;">. (page 54)</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></div>
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<span style="font-family: inherit;"><span style="font-size: 12pt;">More on AT&T’s proposed WLL
broadband service (from the El Dorado County video):</span></span></div>
<ul>
<li><span style="font-family: inherit;"><span style="font-size: 12pt;">Broadband speeds must meet or exceed
10 megabits per second down and 1 up</span></span></li>
<li><span style="font-family: inherit;"><span style="font-size: 12pt;">Latency should not exceed 100
milliseconds</span></span></li>
<li><span style="font-family: inherit;"><span style="font-size: 12pt;">Initial minimum usage allowance of
150 gigabytes per month</span></span></li>
<li><span style="font-family: inherit;"><span style="font-size: 12pt;">Monthly rates must be comparable to
fixed wireline urban rates for the same level of service in urban areas or at
or below the FCC Annual National Rate Benchmark (approx. $72/month)</span></span></li>
<li><span style="font-family: inherit;"><span style="font-size: 12pt;">AT&T must meet specified
deployment milestone dates by state</span></span></li>
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<li><span style="font-family: inherit;"><span style="font-size: 12pt;">40% built by year-end 2017</span></span></li>
<li><span style="font-family: inherit;"><span style="font-size: 12pt;">60% by year-end 2018</span></span></li>
<li><span style="font-family: inherit;"><span style="font-size: 12pt;">80% by year-end 2019</span></span></li>
<li><span style="font-family: inherit;"><span style="font-size: 12pt;">100% by year-end 2020-21</span></span></li>
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</ul>
<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-19765513362989245762016-11-01T11:14:00.002-07:002016-11-01T11:15:58.543-07:00Week 4 Testing: 82% Complete<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjA0MZPNV7zAInLSKzbYgPyg5AmB76eV_3wqeIHWtTGstcetzYq6hia6TxDo8iLyrIKd-y0BiO5SvEnI3YIaC7UFwvD0EMZEIBwAB1kD55VX7fAm8SARYErS5yojKEF3FjyMwWH_SeIz-65/s1600/Round+10+Week+4+twelvetych.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjA0MZPNV7zAInLSKzbYgPyg5AmB76eV_3wqeIHWtTGstcetzYq6hia6TxDo8iLyrIKd-y0BiO5SvEnI3YIaC7UFwvD0EMZEIBwAB1kD55VX7fAm8SARYErS5yojKEF3FjyMwWH_SeIz-65/s640/Round+10+Week+4+twelvetych.JPG" width="480" /></a></div>
Our testers are nearly finished with the 10th round of statewide field testing with 82% complete as of last Friday. Here's a map of the completed locations in red, and those still needing to be tested in blue:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8GbppadoPsScHQuEBX6a_98Yy2-8RlXYSQmkXEgx91M3UC52nJc69qhyN3lEb2QFMTGcFKzJw1YBWaqfk4YgxyUMv0Mz8128j0EqvE7aF6Eclr_dFq7Aeit6cnAMoSmkKzt5yXHbERAIW/s1600/Round+10+week+4+status+map.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8GbppadoPsScHQuEBX6a_98Yy2-8RlXYSQmkXEgx91M3UC52nJc69qhyN3lEb2QFMTGcFKzJw1YBWaqfk4YgxyUMv0Mz8128j0EqvE7aF6Eclr_dFq7Aeit6cnAMoSmkKzt5yXHbERAIW/s640/Round+10+week+4+status+map.JPG" width="488" /></a></div>
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-20926695708561908322016-10-28T15:02:00.004-07:002016-10-28T15:03:27.412-07:00CalSPEED Testing @ Head of the Charles Regatta<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgn4A3qaqrHyvvHGfm20l6uwmqzVZLk4Klrlt4X3f3y7DYr0vubveE8MMT_o5nl1IufBW7Gmf5g5Ac5VI9LEIi4DxjiQrQO1apNkB1DvvuhOSiPby0vMeAMBVW_hTNLgjAL9mJXUPLq_neN/s1600/HOCR_1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgn4A3qaqrHyvvHGfm20l6uwmqzVZLk4Klrlt4X3f3y7DYr0vubveE8MMT_o5nl1IufBW7Gmf5g5Ac5VI9LEIi4DxjiQrQO1apNkB1DvvuhOSiPby0vMeAMBVW_hTNLgjAL9mJXUPLq_neN/s640/HOCR_1.jpg" width="475" /></a></div>
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Last weekend, River City Rowing Club teammates and I competed in the
Senior Master Four race at the annual Head of the Charles Regatta in
Boston. While there, I ran several speed tests at the AirBnB where we
stayed -- both on the WiFi provided and on AT&T's LTE network. Here
are the results:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjl2GigcY6SFxQEvyCv0pyMHdKESmypG0pJyK9yo9NBMd77HNSTv0qtF3UdeEVxNZJCQKdhlLtibpjRq4iLrKcXBJzBkF3tZVmgU3TQY21ZswEK6SchfcaAQ1fMgTAVcSTWtd5FoqXR1Rd/s1600/Boston+CalSPEED+tests+10-20-2016.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="145" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjl2GigcY6SFxQEvyCv0pyMHdKESmypG0pJyK9yo9NBMd77HNSTv0qtF3UdeEVxNZJCQKdhlLtibpjRq4iLrKcXBJzBkF3tZVmgU3TQY21ZswEK6SchfcaAQ1fMgTAVcSTWtd5FoqXR1Rd/s640/Boston+CalSPEED+tests+10-20-2016.JPG" width="640" /></a></div>
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Head of the Charles racecourse. Test location shown in red point below.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhq7CQ1Y4MfbU9X-565QEebPelcVhgXbI-q_kOdB2928zstuGK7HvecRm5sSDjPX4tdCulwQo_hRIbGGIaBlRAudXnj5bcdjGHYRE3BWVj8Pbeo9YrEQckU4r5xHAna1IDpm3D-13kqLLB2/s1600/Charles+River+-+Boston+CalSPEED.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="325" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhq7CQ1Y4MfbU9X-565QEebPelcVhgXbI-q_kOdB2928zstuGK7HvecRm5sSDjPX4tdCulwQo_hRIbGGIaBlRAudXnj5bcdjGHYRE3BWVj8Pbeo9YrEQckU4r5xHAna1IDpm3D-13kqLLB2/s400/Charles+River+-+Boston+CalSPEED.JPG" width="400" /></a></div>
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River City Rowing Club Sr. Master Four: Michael Paiva, Dan Tharp, Paul Crawford, Whitney Powell, me<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUCMn-7-8np-71qb5qleZ7Krji6HTt8hIorE_bJbBvCuAQbhcuf79GJsjiJO-kMwdB0VCBy_YymKkFrJqlC6Vhu6fq0xQlgJpQZ6D1tVosDmlf0QNJkdy4u_EX4ijA0jXCChLmGZjjLx1S/s1600/HOCR_2.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUCMn-7-8np-71qb5qleZ7Krji6HTt8hIorE_bJbBvCuAQbhcuf79GJsjiJO-kMwdB0VCBy_YymKkFrJqlC6Vhu6fq0xQlgJpQZ6D1tVosDmlf0QNJkdy4u_EX4ijA0jXCChLmGZjjLx1S/s400/HOCR_2.jpg" width="328" /></a></div>
Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-56436037597500985682016-10-27T15:28:00.001-07:002016-11-01T11:17:55.394-07:00Week 3 Mobile Testing Progress - 75% complete as of Oct. 26<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbeE8KYVWTV4kUXy-4x-RhNva3OxVZjbIjJo1R1Mz6LN0Z71rF55PDOnenur6PY0sZdH0oFmacplUiNHyrJe7UJXnPSEyR3ImrXwYH36jVwD0WEA2j_LdrlP_dk5UEUvGXGLXSXFZCOrVa/s1600/Week+4+neuftych.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbeE8KYVWTV4kUXy-4x-RhNva3OxVZjbIjJo1R1Mz6LN0Z71rF55PDOnenur6PY0sZdH0oFmacplUiNHyrJe7UJXnPSEyR3ImrXwYH36jVwD0WEA2j_LdrlP_dk5UEUvGXGLXSXFZCOrVa/s400/Week+4+neuftych.JPG" width="400" /> </a></div>
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-88343812382409051592016-10-27T15:10:00.002-07:002016-11-08T14:42:52.000-08:00Hello Wireless Loops. Goodbye Fiber? (Part 1)<div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfVyADhX6BB7r5JlnTsW44hw1-x7L6Vj2xXbEAIKrQJIPBB_8bSoh37JMpSaH_MwaKQcQoROXrcq05Ma2s8OhQ3NOCIQiSz-qlAHM3xrRk2zn8d6vFX-VC9DTlaS2AofcQsL_xskQoN-Yn/s1600/Ohio+Internet.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="239" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfVyADhX6BB7r5JlnTsW44hw1-x7L6Vj2xXbEAIKrQJIPBB_8bSoh37JMpSaH_MwaKQcQoROXrcq05Ma2s8OhQ3NOCIQiSz-qlAHM3xrRk2zn8d6vFX-VC9DTlaS2AofcQsL_xskQoN-Yn/s320/Ohio+Internet.png" width="320" /></a></div>
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<b>Wireless Loops As Copper Substitute</b><br />
There have been <a href="https://potsandpansbyccg.com/2016/09/16/atts-caf-ii-plans/" target="_blank">reports</a> that California's largest local exchange carrier and Connect America Fund Phase II recipient, AT&T California (<a href="http://cpuc.ca.gov/General.aspx?id=9295" target="_blank">maps of California's CAF II areas</a>), plans to use wireless loops to deliver broadband to high cost-eligible households -- in other words, use mobile (i.e. "wireless loops") as a substitute for copper telephone lines to offer speeds of 10 megabits per second down and 1 megabit per second up or faster (10/1). How the FCC measures AT&T's progress in deploying wireless 10/1 could greatly influence the level of investment AT&T needs to make. This post analyzes several scenarios where AT&T uses mobile LTE spectrum to deliver wireless loops.<b> Read <a href="http://calbroadbanddrivetest.blogspot.com/2016/11/hello-wireless-loops-goodbye-fiber-part.html">Part 2</a> for corrections and comments to this analysis.</b><br />
(photo credit: Owen Rochte)<br />
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<b>Background</b> <br />
Last year, AT&T, Verizon, Frontier, and Consolidated agreed to receive from the FCC, collectively, <a href="http://cpuc.ca.gov/General.aspx?id=9295" target="_blank">$105 million annually</a>
for five years to upgrade California homes so they can get at least a 10/1 connection to the internet. The federal program that pays for this is
called Connect America Fund Phase II (CAF II), and it is funded by
surcharges on our telephone bills.<br />
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<b>Fiber Optic Reality Check</b><br />
As we enter the last
quarter of 2016, it's time for a reality check. For those of you living
in CAF II high cost areas (primarily rural California) who've been
holding out hope for fiber optic broadband access to your home, you may
be waiting in vain. That's because CAF II doesn't pay enough for
fiber to the home, and carriers are not obligated to build fiber to the
home. Furthermore, once the CPUC's California Advanced Services Fund runs out
of money, there's arguably no funding mechanism, either federal or
state, to bring fiber to rural California homes.<b> </b><br />
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<b>Can Mobile Deliver?</b><br />
If engineered as a wireline substitute, mobile can deliver 10 megabits per second downstream and 1 megabit per second upstream (10/1) to the home. The question is what will be used as proof that AT&T's 141,000 CAF II-eligible homes have been upgraded to receive that level of service? We know from mobile field tests that mobile speeds are highly variable from one moment to the next, so in order to deliver a reliable 10/1 service, AT&T may need to augment their network to deliver considerably faster speeds on average. Refer to the <a href="https://www.fcc.gov/ecfs/filing/60001299486" target="_blank">CPUC's comments to the FCC</a> on GN Docket No. 15-191 regarding the highly variable nature of mobile broadband and the importance of accounting for reliability when measuring broadband speeds.<br />
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<b>The "LTE" Indicator On Your Phone Doesn't Mean Fast Speeds</b><br />
The FCC has made available to the public some of AT&T's mobile broadband deployment data. Unfortunately, speed data are missing. What remains is a file showing areas with access to LTE (4G "Long Term Evolution") service, as well as other, lower levels of service. We know from experience that mobile coverage shrinks as speeds increase, so it's impossible to tell how large a 10/1 service area extends across California. <br />
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<b>Three CAF II Wireless Loop Scenarios</b><span style="mso-fareast-font-family: "Times New Roman"; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes;"> </span><br />
<span style="mso-fareast-font-family: "Times New Roman"; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes;">If AT&T is going to
use LTE wireless loops (i.e. home broadband access over the mobile network),
here are three initial takes on how many CAF II-eligible households are
theoretically covered today using various data sets. Based on these scenarios,
AT&T has to make either very little investment to offer 10/1 service to
their CAF II high cost households, or they have to make a significant
investment. The answer hinges on what validation method the FCC uses to ensure AT&T has met its CAF II obligations to offer 10/1 or faster.</span><br />
<ul>
<li><b>Scenario 1: FCC 477 Deployment Data</b> - Using the December 2015 deployment data AT&T filed with the FCC, 85% of AT&T's CAF II high cost households have LTE coverage. Note that "LTE" is not the same as 10/1 or faster. However, if the FCC were to use 477 data as proof of meeting CAF II obligations, AT&T could conceivably claim subsidies for most of the 141,000 high cost households without doing any network upgrades.</li>
<li><b>Scenario 2: Interpolated Average Speed Data </b>- Based on interpolated average speeds from Spring 2016 mobile field testing, over half of AT&T's CAF II high cost households appear to have access to speeds of 10/1 or faster.</li>
<li><b>Scenario 3: Interpolated Mean Minus 2 Standard Deviations </b>- Using this stricter standard, where we reduce the average speed at each of the 1,990 field test locations by two standard deviations and create an interpolated surface using those adjusted speeds, nearly all of the 141,000 households appear to remain CAF II eligible. This suggests that AT&T would need to make a significant investment in their mobile network to deliver a reliable 10/1 or faster service to their high cost households.</li>
</ul>
<b>Conclusion</b><br />
Of these three scenarios, the answer to how much additional coverage is necessary is likely to be somewhere between scenarios 2 and 3, because scenario 1 is does not rely on a speed threshold, but rather simply the presence of LTE service. "LTE" offers a wide range of speeds, including zero kilobits per second. For the sake of reliability, the FCC should implement a robust mobile measurement program, such as CalSPEED, to verify AT&T has met its CAF II obligations using wireless loops.<br />
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<b>Scenario 1: FCC 477 Deployment Data: 85% LTE Coverage</b><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhw_qUElU4j_WThUAwoZZOx-BV_hblUCWdoh6FZ0XcFUh4h1UqVI0mtMn7msUYfFL_KyxenuNngapQiikCAXYXsvM8sSOgC5Iz7pBN7X9gN3pEKJbuVyMIfz0UENHCKtbtG2wPGRHYwmugr/s1600/ATT+Wireline+High+Cost+vs.+Dec+2015+477+Mobile+LTE.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="486" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhw_qUElU4j_WThUAwoZZOx-BV_hblUCWdoh6FZ0XcFUh4h1UqVI0mtMn7msUYfFL_KyxenuNngapQiikCAXYXsvM8sSOgC5Iz7pBN7X9gN3pEKJbuVyMIfz0UENHCKtbtG2wPGRHYwmugr/s640/ATT+Wireline+High+Cost+vs.+Dec+2015+477+Mobile+LTE.JPG" width="640" /></a></div>
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<b>Scenario 2: Interpolated Average Speed Data: 57% High Cost Households with 10/1 or Greater</b><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXji6gZMxa4iuzCPx8s8x9FORZfYpU3oUPR2fzQFMQzjz-7HesTf5JdHjHxnzJujBULUsdTYWK2YH7sEUAIHI76ZfJa3-BPGIHIbyvLIoZBROMLG4fxySMTNaDwbgopOkclro9gJTVAjpv/s1600/ATT+Wireline+High+Cost+vs+Spring+2016+Mean+Interpolated.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="484" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXji6gZMxa4iuzCPx8s8x9FORZfYpU3oUPR2fzQFMQzjz-7HesTf5JdHjHxnzJujBULUsdTYWK2YH7sEUAIHI76ZfJa3-BPGIHIbyvLIoZBROMLG4fxySMTNaDwbgopOkclro9gJTVAjpv/s640/ATT+Wireline+High+Cost+vs+Spring+2016+Mean+Interpolated.JPG" width="640" /></a></div>
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<b>Scenario 3: Interpolated Mean Minus 2 Standard Deviations: No Households with 10/1</b><br />
<b> </b> <br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwxqZZADMYZBtLgH1-HQh7H5etvEXkEqvu0Sf-YsewDWqKexRqNMCVFznEZscTPkEQEgvyrIqGgRalD8VFn-RPtvUMNK6dw3m6AZMCUOhn7euC-LDsexnGqD-4yXPM9W1wTnbUOTITmhys/s1600/ATT+Wireline+High+Cost+vs+Spring+2016+Mean-2+Interpolated.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="482" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwxqZZADMYZBtLgH1-HQh7H5etvEXkEqvu0Sf-YsewDWqKexRqNMCVFznEZscTPkEQEgvyrIqGgRalD8VFn-RPtvUMNK6dw3m6AZMCUOhn7euC-LDsexnGqD-4yXPM9W1wTnbUOTITmhys/s640/ATT+Wireline+High+Cost+vs+Spring+2016+Mean-2+Interpolated.JPG" width="640" /></a></div>
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Here is what AT&T's LTE coverage looks like based on Scenario 1 (no speeds indicated):<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsAFODqgFKw3KpI78-9PHttK9r-32tL3PTU_7KdJuxjBdQUMY3ZGTqs5LRjSv_MzfMWGSLHOFE0RvKtU9KIHhevTgPTBK-smBu5UB1dKOKDvAho_Ke-2FqbFMSEOxO7KpXefiAX0NEZxCc/s1600/ATT+Dec+2015+Mobile+FCC+477.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsAFODqgFKw3KpI78-9PHttK9r-32tL3PTU_7KdJuxjBdQUMY3ZGTqs5LRjSv_MzfMWGSLHOFE0RvKtU9KIHhevTgPTBK-smBu5UB1dKOKDvAho_Ke-2FqbFMSEOxO7KpXefiAX0NEZxCc/s320/ATT+Dec+2015+Mobile+FCC+477.png" width="283" /></a></div>
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Here is what AT&T's LTE coverage looks like based on Scenario 3 (speeds indicated in legend):<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgm4Vm6zj6hkfCAFKkYGWqMh8_4aq4_5V63-E3GZWf4zkC5Z67KU9WY4ZUbBH5HF0qFC7ssoRCLyIRGmH6U_z5moihhKYWEgp-y8RbTBsYHzlnyr6mK4e7dMg1RaVnmkoobcR5KnpZ4d0ZZ/s1600/ATT+Round+9+Mean+minus+2+Interpolated.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgm4Vm6zj6hkfCAFKkYGWqMh8_4aq4_5V63-E3GZWf4zkC5Z67KU9WY4ZUbBH5HF0qFC7ssoRCLyIRGmH6U_z5moihhKYWEgp-y8RbTBsYHzlnyr6mK4e7dMg1RaVnmkoobcR5KnpZ4d0ZZ/s400/ATT+Round+9+Mean+minus+2+Interpolated.JPG" width="307" /></a></div>
<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-35849369584343947942016-10-19T11:27:00.001-07:002016-10-19T11:29:00.035-07:00Roadrunner & Wile E. Coyote<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwoWobopsPrlLsEVtFmg5D4yX_ynaYBUtJo0csTRcwM_D4ZU1zn8olsDXEb5xVaDUYnqvkn2lsJ8DLedpoQihrxTRpY8oU8UU4eT0r8egqGZrTioLPoC4lxOF3CZQ101GueOhpM4fOmyva/s1600/Steve+Crews+Roadrunner+-+Round+10+Week+2.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="225" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwoWobopsPrlLsEVtFmg5D4yX_ynaYBUtJo0csTRcwM_D4ZU1zn8olsDXEb5xVaDUYnqvkn2lsJ8DLedpoQihrxTRpY8oU8UU4eT0r8egqGZrTioLPoC4lxOF3CZQ101GueOhpM4fOmyva/s400/Steve+Crews+Roadrunner+-+Round+10+Week+2.jpg" width="400" /></a></div>
This week, we were treated to an amazing photo by tester Steve Crews of a roadrunner with mountains in the background. The team finished Week 2 having completed 46% of the 1,990 locations (see map image below, completed location shown in red).<br />
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Average speeds shown in table below are in kilobits per second (Kbps), so divide by 1,000 to get megabits per second (Mbps).<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEglhpU0dUvF6nvD1ief79DT9N125jDOgdARgftFolXeiMxAonXe_8tKO_5_viJM1gCqsPYl9BvaBthJDmfFKDTIfHcYu8rN9rcA3LbTSHc7Joggocg4awN0NyW6lnp3dYiidwA_m6dW5con/s1600/Round+10+Average+TCP+Week+2.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="121" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEglhpU0dUvF6nvD1ief79DT9N125jDOgdARgftFolXeiMxAonXe_8tKO_5_viJM1gCqsPYl9BvaBthJDmfFKDTIfHcYu8rN9rcA3LbTSHc7Joggocg4awN0NyW6lnp3dYiidwA_m6dW5con/s400/Round+10+Average+TCP+Week+2.JPG" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWWNXsQUD8L6-BamMpdr0wrTmo7k0_20qlZ0R4q1jsLM1LVk9e0AjoX2DqzRwgiNr4dynOOKzJKdt0l0NPROZPUGXXydeRt7bJ47oJ3nKtLzbhE8ju95PoOCfzNr-zQ-lnYCgJUYzWEflQ/s1600/Neuftych+-Week+3.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="397" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWWNXsQUD8L6-BamMpdr0wrTmo7k0_20qlZ0R4q1jsLM1LVk9e0AjoX2DqzRwgiNr4dynOOKzJKdt0l0NPROZPUGXXydeRt7bJ47oJ3nKtLzbhE8ju95PoOCfzNr-zQ-lnYCgJUYzWEflQ/s400/Neuftych+-Week+3.JPG" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEihOOd3eH0Vcva1yWKITx8wzMj30SpAXB68iDjwRuUoHgSgZvvOZ-Z83apUYpAylzt5hnnaVFQYoued5UztkZ_IntUz47srDIHrUaSNL5dssqRHWJwArNUlAaGrCvHkppoBwmgVvGtje5CH/s1600/Round+10+-+Week+2+progress.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEihOOd3eH0Vcva1yWKITx8wzMj30SpAXB68iDjwRuUoHgSgZvvOZ-Z83apUYpAylzt5hnnaVFQYoued5UztkZ_IntUz47srDIHrUaSNL5dssqRHWJwArNUlAaGrCvHkppoBwmgVvGtje5CH/s640/Round+10+-+Week+2+progress.JPG" width="488" /></a></div>
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-14707651477878576102016-10-14T14:38:00.000-07:002016-10-14T14:38:04.908-07:00Two CalSPEED Locations in Destroyed City of Homs, Syria<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfDSDd8FAm719TmBGtpkrntzD1ChqYHqL83VjbKUrvAefUFnRYylrJ-t07XPIbe6KvF-hSc_VqMx0DIgsqu81-8PT4fV7InXZaBeuAN4D80EkTWZROAN47cMMfPatJN6hdvobtzFTcrYvb/s1600/Homs+-+both+locations-paint.jpg" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="387" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfDSDd8FAm719TmBGtpkrntzD1ChqYHqL83VjbKUrvAefUFnRYylrJ-t07XPIbe6KvF-hSc_VqMx0DIgsqu81-8PT4fV7InXZaBeuAN4D80EkTWZROAN47cMMfPatJN6hdvobtzFTcrYvb/s400/Homs+-+both+locations-paint.jpg" width="400" /></a><br />
As I've said in earlier posts, back when we launched CalSPEED in 2013, we didn't restrict distribution to only the United States. We added the restriction because we didn't want people running tests all over the world. CalSPEED is designed to be used by California residents so they can understand how their mobile provider is performing. Nevertheless, we occasionally still see tests appearing in unexpected parts of the world.<br />
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At the end of 2014, there were three tests performed at geographic coordinates that appear to be in the City of Homs, Syria. A quick look at those locations in Google Earth reveals the destruction of that city from years of war. See before-and-after photos in <a href="https://www.theguardian.com/world/2014/jan/26/syria-heritage-in-ruins-before-and-after-pictures" target="_blank">The Guardian here</a>.<br />
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A <a href="http://www.nytimes.com/2016/10/15/world/middleeast/aleppo-destruction-drone-video.html?hp&action=click&pgtype=Homepage&clickSource=story-heading&module=second-column-region&region=top-news&WT.nav=top-news&_r=0" target="_blank">New York Times' article</a> on the destruction of another Syrian city, Aleppo, estimates the number of displaced people around the world
is equivalent in number to the entire population of the United Kingdom or
France. It would seem that number includes all displaced people, not just Syrians, but these images of Syria, even from Google Earth, are devastating.<br />
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Here's what part of Homs looks like from Google Earth:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXZ7yq5UZpmBcJC8_BbTVNSVt-0t_2OTRBHkLRIbHgY7_3mup2y3Yw06BpV9uXx0cCNiC6vu7_dWZ59QCfS3LtCrQsvUlX-sPi70l62D14m42bLfxJAZ2oqCi9bWgE-xe37vvkd6maKcdg/s1600/Homs+detail.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXZ7yq5UZpmBcJC8_BbTVNSVt-0t_2OTRBHkLRIbHgY7_3mup2y3Yw06BpV9uXx0cCNiC6vu7_dWZ59QCfS3LtCrQsvUlX-sPi70l62D14m42bLfxJAZ2oqCi9bWgE-xe37vvkd6maKcdg/s400/Homs+detail.JPG" width="380" /></a></div>
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Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-35499876703675477322016-10-13T10:21:00.003-07:002016-10-14T14:39:16.482-07:00Believe Me, It's Radar Enforced!<div class="separator" style="clear: both; text-align: left;">
My favorite is the "Radar Enforced" road sign collection. Product of a frustrated highway patrol officer? Below the nine photo collage is a cryptic fortune cookie message.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSc-gQzqyG166yqsaBXqKiWJsuFdT9Oa6HLeYyHNrkxE9DnWxVvF68-rD_lOnpjGv1XVRyuzpxHEJiyIdSKsSc0oZpIeSjPXUcOEXV7C3Xhs96-KswagoPHXXNhShTlZgpIBlHE1RjdslU/s1600/Neuftych+-+9+photos.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSc-gQzqyG166yqsaBXqKiWJsuFdT9Oa6HLeYyHNrkxE9DnWxVvF68-rD_lOnpjGv1XVRyuzpxHEJiyIdSKsSc0oZpIeSjPXUcOEXV7C3Xhs96-KswagoPHXXNhShTlZgpIBlHE1RjdslU/s400/Neuftych+-+9+photos.JPG" width="398" /></a></div>
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<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-39225816374392740342016-10-13T10:16:00.000-07:002016-10-13T10:16:01.142-07:00Week 1 Progress MapThe red dots indicate which locations our testers have completed as of the end of last week. The blue dots are locations that will be tested this week and in coming weeks.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlupGnHNbeMFJ-cae3nTI1NRZgcThEKQM_pT4HXXt3TrzdXWD6rHj3wa4X3wL6m4-U6AiuJqSdtdw5cy_lAl9Stw-qbRoGWN7NuY5cYnjuj4ntNHKd6lOz4lzxDsb6owOGCRh9g_JRFyw2/s1600/Round+10+Testing+Map+Week+1-circles.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlupGnHNbeMFJ-cae3nTI1NRZgcThEKQM_pT4HXXt3TrzdXWD6rHj3wa4X3wL6m4-U6AiuJqSdtdw5cy_lAl9Stw-qbRoGWN7NuY5cYnjuj4ntNHKd6lOz4lzxDsb6owOGCRh9g_JRFyw2/s640/Round+10+Testing+Map+Week+1-circles.jpg" width="489" /></a></div>
<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-52092078618784651762016-10-10T15:51:00.005-07:002016-10-11T10:52:31.190-07:00Bravo! Photos from Week 1<div class="separator" style="clear: both; text-align: center;">
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I am constantly amazed at the geographic diversity of California, and the photos coming in from our field testers <span style="color: blue;">are proof</span>. Their photos are wonderful. I'm adding a few of them from Week 1, but feel free to follow their progress on Instagram at cpuc_broadband_testing.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDufRC68tkhF_ZNJVIq74tsY6BNiN-0WE7ssDecXQutY71hhmEZwe6PRrmUkVtO8GGjdsELzyyx1KF09faMB8pr6I8exu3qqFx1Ciy5FSP-RrN3-8p6K6zAMxocyPzHx7rHmHEP5-xjsu9/s1600/Owens+Valley+White+Mountains+-+Crews.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDufRC68tkhF_ZNJVIq74tsY6BNiN-0WE7ssDecXQutY71hhmEZwe6PRrmUkVtO8GGjdsELzyyx1KF09faMB8pr6I8exu3qqFx1Ciy5FSP-RrN3-8p6K6zAMxocyPzHx7rHmHEP5-xjsu9/s320/Owens+Valley+White+Mountains+-+Crews.JPG" width="272" /></a></div>
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Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-76045969244575192202016-10-10T15:27:00.000-07:002016-10-10T15:33:28.417-07:00Mobile Internet Getting Faster, But Less Reliable?<div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgty-Eh7S5gDgMDdlTYetXC0QJQxMlPMTHSOoSQ38ZP6jAsvQ3LWMtWownKuQaV7vhLeMk8NO-DKESjqAkT7GqQGGAsrlx3o-8r0JTajqqt8RptJe1jsGwF-zEuASqcvS6oDQGzQigtH7SX/s1600/too-fast-1534796-639x423.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="265" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgty-Eh7S5gDgMDdlTYetXC0QJQxMlPMTHSOoSQ38ZP6jAsvQ3LWMtWownKuQaV7vhLeMk8NO-DKESjqAkT7GqQGGAsrlx3o-8r0JTajqqt8RptJe1jsGwF-zEuASqcvS6oDQGzQigtH7SX/s400/too-fast-1534796-639x423.jpg" width="400" /> </a></div>
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Hey Everyone, Good News! Verizon, AT&T, T-Mobile, and Sprint are
able to deliver increasingly faster downstream speeds to your
smartphone. The question is, how reliable are those speeds? Can you bank
on getting 50 megabits per second every time you try to download a
large photo to your smartphone?</div>
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The graph below shows the maximum downstream speeds measured for each of
the four providers over the life of our mobile field testing program.
During this multi-year period, we've seen the introduction of LTE
networks by all four providers, and just recently Verizon announced the
introduction of LTE Advanced, which promises a 50% increase in speeds. </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHCNFMBj3vqJaas0bkrPhHlsl2YxZdu-7CuXoedov5ZT3Xydtlf8JczMW-pRNc_-yGDmXkJSqBO8osDeptRwdqFRf4l55ggYjFbKQmzcADzyHpNXbsW00ZIgie5-5qqcgEuExfiT_HP3-U/s1600/Max+TCP+all+providers.PNG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="385" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHCNFMBj3vqJaas0bkrPhHlsl2YxZdu-7CuXoedov5ZT3Xydtlf8JczMW-pRNc_-yGDmXkJSqBO8osDeptRwdqFRf4l55ggYjFbKQmzcADzyHpNXbsW00ZIgie5-5qqcgEuExfiT_HP3-U/s640/Max+TCP+all+providers.PNG" width="640" /></a><br />
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<span style="font-size: large;"><b> Newer technology = faster speeds.</b></span></div>
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Those of you familiar with this blog know that faster speeds sure are great, but more important is the reliability of those faster speeds. How likely will I be able to experience the faster speeds consistently?<br />
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One metric we collect is the standard deviation. A low standard deviation suggests that the speed measurements tend to be near the mean (average). Conversely, a high standard
deviation suggests that the speed measurements are spread out over a wider
range of values from the mean. Higher standard deviation suggests wider fluctuations in speeds.<br />
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The data we've collected suggest that as download speeds get faster, the standard deviation increases. For one session, you might get 2 megabits per second, and another session, 24.</div>
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Here is a graph comparing the mean downstream speeds between Fall 2015 and Spring 2016. AT&T, T-Mobile, and Verizon seem to be delivering faster average downstream speeds compared to six months before.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPcrcBSI91RMtBfBzqD-CiSZ9dW25aSMtAN_X5mpHpWcd1lR_tB_zHlW6noJkqJh9R6NDHqyxcwMVK7ybK69i_1Xjg38h9n5onZvyqxS9_u4I2e62bQB8ggNOVX0oT9WbMS1l0ArCydKHw/s1600/Round+8+vs+Round+9+Mean+TCP+Down.PNG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><br /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKOff_F5wvxIrX4TeS3mZcY1TryFHI_GR4Dao3IIEh_SUjnNW2qhUJt1DADRzcAT0eUphixeHoIgPF9XCTm2apn3EJ-dYFEwlod7uj4rArhAoUsTJAs5mmC3RWIdni8lRXg6lEeHTBQUzL/s1600/Round+8+vs+Round+9+Mean+TCP+Down.PNG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="384" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKOff_F5wvxIrX4TeS3mZcY1TryFHI_GR4Dao3IIEh_SUjnNW2qhUJt1DADRzcAT0eUphixeHoIgPF9XCTm2apn3EJ-dYFEwlod7uj4rArhAoUsTJAs5mmC3RWIdni8lRXg6lEeHTBQUzL/s640/Round+8+vs+Round+9+Mean+TCP+Down.PNG" width="640" /></a></div>
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Now, let's look at the standard deviation as a percentage of the downstream speed. Standard deviations have increased as a percentage of the average downstream speeds.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgt7MLlrbnteigeIEw87t3mBRTV-3BzBD91eNI1IB10vmHVZpF-wr7x2I0vY1zbspgXgpexKq6VEHwXAN8iv8TaF4lu6h-kCY2mtWHiUTg6wfUYtG9ej8ikr4q2TRY6S6CwVuHB2jteljXc/s1600/Round+8+vs+Round+9+Downstream+STDEV+as+Percentage.JPG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="344" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgt7MLlrbnteigeIEw87t3mBRTV-3BzBD91eNI1IB10vmHVZpF-wr7x2I0vY1zbspgXgpexKq6VEHwXAN8iv8TaF4lu6h-kCY2mtWHiUTg6wfUYtG9ej8ikr4q2TRY6S6CwVuHB2jteljXc/s640/Round+8+vs+Round+9+Downstream+STDEV+as+Percentage.JPG" width="640" /></a></div>
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What does this mean? It's hard to say, but it appears the likelihood of getting the average speed at a particular location is lower than before. Here is what the average downstream speeds look like after lowering the mean downstream speeds by two standard deviations. Using this approach, we see a drop rather than an increase compared to the previous round of testing.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhTDCBvtATg__yWE-3ktNzui2_hoVovMJ2qJ8i5F7JVJW8-sUrxG_kdqKHrt04kdUAaiNrfOpShlHqpquUEL731Lp-Uom5MyaKP8jNHMKzVqKe9-i3gPBX7o8eIt4hTBIRSd86Rzl-Z1hVA/s1600/Round+8+vs+Round+9+Mean+Minus+2+STDEV+TCP+Down.PNG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="384" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhTDCBvtATg__yWE-3ktNzui2_hoVovMJ2qJ8i5F7JVJW8-sUrxG_kdqKHrt04kdUAaiNrfOpShlHqpquUEL731Lp-Uom5MyaKP8jNHMKzVqKe9-i3gPBX7o8eIt4hTBIRSd86Rzl-Z1hVA/s640/Round+8+vs+Round+9+Mean+Minus+2+STDEV+TCP+Down.PNG" width="640" /></a></div>
<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-32281460644289884582016-10-04T16:55:00.002-07:002016-10-04T16:55:07.492-07:00Fall 2016 Field Testing BeginsFirst photo from Steven Crews...<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEga6Vx3uCNOXt4hgEElVjHuKh3EPsrDlBOt8fLNu4ZPtdruGBVcmW5rSqMSqwX3h6MTbGurS37HX6DXfbd5kYone6bcVBdn0Gcap4tlXJeVWJbYyk5PGSTnyG1DcwAS_jakCX7lFfcc-dvn/s1600/Steven+Crews+Fall+2016+Field+Testing+Day+1.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="195" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEga6Vx3uCNOXt4hgEElVjHuKh3EPsrDlBOt8fLNu4ZPtdruGBVcmW5rSqMSqwX3h6MTbGurS37HX6DXfbd5kYone6bcVBdn0Gcap4tlXJeVWJbYyk5PGSTnyG1DcwAS_jakCX7lFfcc-dvn/s400/Steven+Crews+Fall+2016+Field+Testing+Day+1.jpg" width="400" /></a></div>
<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-55530781529487554072016-09-02T17:04:00.001-07:002016-09-02T17:04:29.365-07:00Verizon's LTE Advanced - Where's the Beef?<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfdIYLRPe0aB9mbL2jPY-eUaji8ShPI05XbgjdiYH_hUynGjbREwCPxxE94I74Csmo8uqZKhSokKutOXuBMBTQm4MBJ4W10tRYo9qcaodtQMIkIlcAcIq1rZeLgoLXDVy6P4u2648JhI8o/s1600/28492615234_d4bb45399a_k.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="355" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfdIYLRPe0aB9mbL2jPY-eUaji8ShPI05XbgjdiYH_hUynGjbREwCPxxE94I74Csmo8uqZKhSokKutOXuBMBTQm4MBJ4W10tRYo9qcaodtQMIkIlcAcIq1rZeLgoLXDVy6P4u2648JhI8o/s400/28492615234_d4bb45399a_k.jpg" width="400" /></a></div>
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We were impressed with Verizon's <a href="http://www.verizon.com/about/news/mobile-users-461-cities-today-get-50-percent-faster-peak-speeds-no-extra-cost-introducing" target="_blank">announcement on August 29th</a> about their launch of LTE Advanced in 461 markets across the country. Verizon claims its customers can get up to 50% faster speeds with LTE Advanced, so we ran a few tests in Chico, which is one of the 17 California markets included in the launch. Based on the few comparison tests between the Samsung Galaxy S6, which is included in Verizon Wireless' list of supported devices, and the Samsung Galaxy Tab 4 8.0, which is not, the results seemed to be tied. It turns out there are several variants of the Samsung Galaxy S6, and I suspect the model we have does not support LTE Advanced.<br />
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Summary of results:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjOPJvcsW2ZFW4Bp0yUYNRoPeryDy-sCVghKOzYHlGJ55D9pSCDbDUHVD6eSqwoEn66LnsPWCDayerumEluaVVKc-EJcj78qnpKC9zeHGHtRT00jsaeHpc7242H_Jh6z6IzjhME9ivitTdX/s1600/Chico+LTE-A+tests.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjOPJvcsW2ZFW4Bp0yUYNRoPeryDy-sCVghKOzYHlGJ55D9pSCDbDUHVD6eSqwoEn66LnsPWCDayerumEluaVVKc-EJcj78qnpKC9zeHGHtRT00jsaeHpc7242H_Jh6z6IzjhME9ivitTdX/s1600/Chico+LTE-A+tests.jpg" /></a></div>
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Here's the of California markets where Verizon claims to have launched LTE Advanced. More to come on this topic as we figure out if there really is a boost with LTE Advanced....<br />
<ol>
<li>Bakersfield</li>
<li>Chico-Oroville</li>
<li>El Centro-Calexio</li>
<li>Eureka</li>
<li>Fresno</li>
<li>Los Angeles</li>
<li>Merced</li>
<li>Modesto</li>
<li>Redding</li>
<li>Sacramento</li>
<li>Salinas-Monterey</li>
<li>San Diego</li>
<li>San Fran.-Oak.-S.J.</li>
<li>San Luis Obispo</li>
<li>Stockton</li>
<li>Visalia-Porterville</li>
<li>Yuba City-Marysville</li>
</ol>
Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0tag:blogger.com,1999:blog-2940705831527392636.post-84752915719424834152016-09-01T15:37:00.000-07:002016-09-01T15:46:54.872-07:00CalSPEED testing in Rural Japan<!--[if gte mso 9]><xml>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhosxzDvw_MxCgOEL99dkf9CLQHHWiosGE9HcTAON2UxcBJ-4Xbg1amnuinmpBxxb9NS8qjpJH5Os3r3g6tdvfW3mLmB1-UyOQL9tTT19HyALQ_1VlDKfqs2mn7V62E20kpGKMWu3kUniTu/s1600/29114938705_3a3e0978db_o.jpg" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhosxzDvw_MxCgOEL99dkf9CLQHHWiosGE9HcTAON2UxcBJ-4Xbg1amnuinmpBxxb9NS8qjpJH5Os3r3g6tdvfW3mLmB1-UyOQL9tTT19HyALQ_1VlDKfqs2mn7V62E20kpGKMWu3kUniTu/s320/29114938705_3a3e0978db_o.jpg" width="240" /></a>While touring the Kansai region with my daughter last week
and the week before, I ran a few speed tests on various muni WiFi networks. I’m
surprised to see MOS hitting 4.0 for some of the tests despite pinging servers
on the west and east coasts of the U.S.</div>
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<b>1. City of Nara</b></div>
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Capital during the Nara Period (before the capital moved to Kyoto in ancient times), Nara claims to have the world's largest wood building, which houses a gigantic Buddha, Todai-ji. The speed test was run on a municipal network from a guesthouse in town. Deer roam freely through the main park, and you can buy "deer biscuits" for the equivalent of $1.50 to feed them.</div>
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Nara speed test (municipal WiFi)</div>
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City of Nara, south of Kyoto, Japan</div>
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Photo with "Sento-kun," the controversially creepy-looking town mascot.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiKH2Gc0b67Wi7T3bKDctAPBcz0pM86FNEhjyBM3yu0F0zHoWkfF1S61Lrbste4SXTEj4MnHWRYuun7nSkA_f7E4cBpDdkqSCKRfOKpkTddvHOhByo1cCNpYgYYi0A3JmXK3vGgPnpGY-XA/s1600/29062372701_0f3002600f_o.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiKH2Gc0b67Wi7T3bKDctAPBcz0pM86FNEhjyBM3yu0F0zHoWkfF1S61Lrbste4SXTEj4MnHWRYuun7nSkA_f7E4cBpDdkqSCKRfOKpkTddvHOhByo1cCNpYgYYi0A3JmXK3vGgPnpGY-XA/s320/29062372701_0f3002600f_o.jpg" width="239" /></a></div>
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Deer biscuits - "Awful for people"</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhV4TSa6FHyx7YWRRVJU8p4oqH1-fesOioKx8QoGXqAadsdIYqMrIhUy4sira3hqIXuSJFvlR6Pbv8Htg5lnHKQF3LIy9uBqRm50b7XlsmCU31XiX4_82GLzVES_sDMzpgDBvAcddxRtmV4/s1600/29037557581_1b3fdc9c6f_o.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhV4TSa6FHyx7YWRRVJU8p4oqH1-fesOioKx8QoGXqAadsdIYqMrIhUy4sira3hqIXuSJFvlR6Pbv8Htg5lnHKQF3LIy9uBqRm50b7XlsmCU31XiX4_82GLzVES_sDMzpgDBvAcddxRtmV4/s320/29037557581_1b3fdc9c6f_o.jpg" width="240" /></a></div>
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<b>2. Shirahama</b></div>
Shirahama is one of Japan's three largest onsen (hot springs) resorts. The name means "white beach," and as you can see from the photo, the sand is white and the sea is turquoise blue. Because of its proximity to Osaka, it's a popular weekend destination. WiFi in Shirahama is available publicly and is paid for by the Wakayama Prefecture government.<br />
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Shirahama speed tests (municipal WiFi)</div>
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Shirahama is located on the southern coast of the Kii Peninsula</div>
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Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com6tag:blogger.com,1999:blog-2940705831527392636.post-8867853511563557192016-08-05T16:48:00.001-07:002016-08-05T16:48:20.614-07:00Mobile's Fastest Cities: Can You Find Them On A Map?<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPRo5IwypSWPHkBvKSNpZ4-VbFeDqjGKM1wGtS_kIrgGk6TzyCob3rVRNH4FwmnPqkkAn6TakhAIW622-qHVh8aOID5LXCaLJ7cSvy1IzNFEg-kdFqkGjFX2cKB7QiP8N8vrwslCI8I79P/s1600/the-secret-1313741.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPRo5IwypSWPHkBvKSNpZ4-VbFeDqjGKM1wGtS_kIrgGk6TzyCob3rVRNH4FwmnPqkkAn6TakhAIW622-qHVh8aOID5LXCaLJ7cSvy1IzNFEg-kdFqkGjFX2cKB7QiP8N8vrwslCI8I79P/s320/the-secret-1313741.jpg" width="320" /></a></div>
<br />
Rootmetrics just published their <a href="http://www.techrepublic.com/article/these-10-cities-have-the-best-cellular-connectivity-in-the-us/?ftag=TREe01923b&bhid=26638650074912045809150313700822" target="_blank">Top10 list of fastest cities</a> for mobile data, and it includes Modesto (#7) and Sacramento (#8). What they don't tell you is their top 10 list is based only on the cities they tested.<br />
<br />
We know from our mobile field tests that the fastest cities in California are ones where LTE is present, but very few people are using it. Indeed, in our ranking of the spring 2016 field tests, major cities like San Francisco and Los Angeles are down at numbers 368 and 369 respectively.<br />
<br />
Shown below is a city ranking, in descending order, of each carrier's combined mean upload and download speeds in kilobits per second. The City of Davis is #23 (T-Mobile). Livermore is #14 (Verizon Wireless), but the fastest "cities" are unrecognizable to most Californians.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTlunBm6ixL-9X_hj4dFqFw4pNbV3lx8qvaXn4x53Wif2ts-_A7GyRJ7BWDW0-vBfjfCVGpwElIDXCGA_ZKIduqqMF6ryV7_r8LvSV6ak739N5PywBsAtJsQ3SEhCkAwj0d6c2nbEh-c2Z/s1600/fastest+cities.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTlunBm6ixL-9X_hj4dFqFw4pNbV3lx8qvaXn4x53Wif2ts-_A7GyRJ7BWDW0-vBfjfCVGpwElIDXCGA_ZKIduqqMF6ryV7_r8LvSV6ak739N5PywBsAtJsQ3SEhCkAwj0d6c2nbEh-c2Z/s640/fastest+cities.JPG" width="331" /></a></div>
<br />Rob Osbornhttp://www.blogger.com/profile/16998949491178580180noreply@blogger.com0