  {"id":143299,"date":"2021-06-08T09:58:44","date_gmt":"2021-06-08T19:58:44","guid":{"rendered":"https:\/\/www.hawaii.edu\/news\/?p=143299"},"modified":"2021-06-08T10:12:35","modified_gmt":"2021-06-08T20:12:35","slug":"internet-technology-celebrates-50-years","status":"publish","type":"post","link":"https:\/\/www.hawaii.edu\/news\/2021\/06\/08\/internet-technology-celebrates-50-years\/","title":{"rendered":"Critical internet technology developed at <abbr title=\"University of Hawaii\">UH<\/abbr> M\u0101noa celebrates 50 years"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading time: <\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2021\/06\/manoa-engineering-alohanet-symposium.jpg\" alt=\"phone and computer\" width=\"676\" height=\"381\" class=\"alignleft size-full wp-image-143302\" srcset=\"https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2021\/06\/manoa-engineering-alohanet-symposium.jpg 676w, https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2021\/06\/manoa-engineering-alohanet-symposium-300x169.jpg 300w, https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2021\/06\/manoa-engineering-alohanet-symposium-130x73.jpg 130w\" sizes=\"auto, (max-width: 676px) 100vw, 676px\" \/><\/p>\n<p>All wireless communications&#8212;including mobile, satellite, cellular and <abbr title=\"Wireless Fidelity\">WiFi<\/abbr>&#8212;utilize a protocol birthed in the University of <span aria-label=\"Hawaii\">Âé¶¹´«Ã½<\/span> at M\u0101noa <a href=\"https:\/\/www.eng.hawaii.edu\/\">College of Engineering<\/a> in June 1971. That technology to establish an initial link called <abbr>ALOHAnet<\/abbr> celebrates its 50th anniversary this month.<\/p>\n<figure id=\"attachment_128712\" aria-describedby=\"caption-attachment-128712\" style=\"width: 214px\" class=\"wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2020\/10\/manoa-engineering-norm-abramson-214x300.jpg\" alt=\"headshot of Norman Abramson\" width=\"214\" height=\"300\" class=\"size-medium wp-image-128712\" srcset=\"https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2020\/10\/manoa-engineering-norm-abramson-214x300.jpg 214w, https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2020\/10\/manoa-engineering-norm-abramson-93x130.jpg 93w, https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2020\/10\/manoa-engineering-norm-abramson.jpg 250w\" sizes=\"auto, (max-width: 214px) 100vw, 214px\" \/><figcaption id=\"caption-attachment-128712\" class=\"wp-caption-text\">Norman Abramson<\/figcaption><\/figure>\n<p>The <a href=\"https:\/\/www.hawaii.edu\/news\/2020\/12\/04\/in-memoriam-norman-abramson\/\">late <strong>Norman Abramson<\/strong><\/a>, one of the original founders of <abbr>ALOHAnet<\/abbr>, who served as a professor of electrical engineering and chair of the <a href=\"https:\/\/www.ics.hawaii.edu\/\">Information and Computer Sciences Department<\/a>, said in October 2020, &ldquo;Whenever you pick up your telephone and make a phone call or use some other applications from that telephone, the very first thing you do is a packet comes from that telephone and the packet says &lsquo;Aloha.&rsquo;&rdquo;<\/p>\n<h2><abbr>ALOHAnet<\/abbr> symposium<\/h2>\n<p>The College of Engineering is hosting a virtual <abbr>ALOHAnet<\/abbr> symposium on Wednesday, June 16, 8 a.m.&#8211;1 p.m., <span aria-label=\"Hawaii\">Âé¶¹´«Ã½<\/span> Standard Time. The event is free and open to the public.<\/p>\n<p><a href=\"https:\/\/www.eng.hawaii.edu\/event\/alohanet50\/\">Visit the College of Engineering website for more details and to register<\/a>.<\/p>\n<p>The symposium will feature introductory remarks, followed by keynote presentations, one of which will honor Abramson. There will be three panel sessions focusing on the impact of <abbr>ALOHAnet<\/abbr>.<\/p>\n<ul>\n<li>Related <em><abbr>UH<\/abbr> News<\/em> stories: <a href=\"https:\/\/www.hawaii.edu\/news\/2020\/10\/13\/alohanet-honored-as-engineering-milestone\/\">Pioneering wireless technology <abbr>ALOHAnet<\/abbr> honored as engineering milestone<\/a>, October 13, 2020<\/li>\n<\/ul>\n<h2>Impact on tech industry<\/h2>\n<figure id=\"attachment_128717\" aria-describedby=\"caption-attachment-128717\" style=\"width: 676px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2020\/10\/manoa-engineering-alohanet-satellite.jpg\" alt=\"people standing next to a satellite with Diamond Head in the background\" width=\"676\" height=\"381\" class=\"size-full wp-image-128717\" srcset=\"https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2020\/10\/manoa-engineering-alohanet-satellite.jpg 676w, https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2020\/10\/manoa-engineering-alohanet-satellite-300x169.jpg 300w, https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2020\/10\/manoa-engineering-alohanet-satellite-130x73.jpg 130w\" sizes=\"auto, (max-width: 676px) 100vw, 676px\" \/><figcaption id=\"caption-attachment-128717\" class=\"wp-caption-text\">ALOHAnet satellite dish on the roof of Holmes Hall with some of its founders (Photo courtesy: Ram Chandran)<\/figcaption><\/figure>\n<p>One of the panels will be on <abbr>ALOHAnet<\/abbr>\u2019s impact on the tech industry, which will be moderated by Monisha Ghosh, Federal Communications Commission chief technology officer; Bob Metcalfe, University of Texas professor of innovation; and <abbr>UH<\/abbr> M\u0101noa College of Engineering alumni <strong>Charlie Bass<\/strong> (chairman, Socket Mobile, <abbr title=\"Incorporated\">Inc<\/abbr>.) and <strong>Ram Chandran<\/strong> (vice president, Anacom <abbr>Inc<\/abbr>.). All four speakers will share their experiences of using the <abbr>ALOHAnet<\/abbr> protocol in their work.<\/p>\n<p>&ldquo;Sometimes the simplest ideas go the farthest and have the most impact, and so it is with ALOHA: transmit, wait for an acknowledgment and retransmit if the acknowledgement wasn&#8217;t received. The basic protocol still forms the heart of many communication systems today, including WiFi,&rdquo; Ghosh said.<\/p>\n<p>Chandran added, &ldquo;This project introduced Random Access Protocols to the computing world and ushered in the era of modern data networking. Norm also proposed and mathematically analyzed the ALOHA Channel protocol. His landmark paper in 1970 opened a floodgate of research in this area that has continued to this day. Today, <abbr>ALOHAnet<\/abbr> is considered the &lsquo;first modern data network.&rsquo;&rdquo;<\/p>\n<p>Metcalfe developed Ethernet&#8212;a method of connecting computers through a local area network&#8212;with David Boggs in the early 1970s. Metcalfe read a paper Abramson wrote on <abbr>ALOHAnet<\/abbr> and spent a month in <span aria-label=\"Hawaii\">Âé¶¹´«Ã½<\/span> learning directly from Abramson.<\/p>\n<p>&ldquo;Norm introduced randomized retransmissions as a shared channel access method. I followed up with Norm, and he very kindly invited me to spend a month with him in <span aria-label=\"Hawaii\">Âé¶¹´«Ã½<\/span> studying <abbr>ALOHAnet<\/abbr>,&rdquo; Metcalfe said. &ldquo;I did some math based on Norm\u2019s math and managed finally to get my <abbr title=\"Doctor of Philosophy\">PhD<\/abbr> from Harvard. David Boggs and I then started moving Norm\u2019s randomized retransmissions from the <abbr>ALOHAnet<\/abbr> WAN to the Ethernet LAN.&rdquo;<\/p>\n<p>This work is an example of <abbr>UH<\/abbr> M\u0101noa\u2019s goal of <a href=\"https:\/\/manoa.hawaii.edu\/wp\/wp-content\/uploads\/2020\/12\/manoa-2025-strategic-plan.pdf#page=25\">Excellence in Research: Advancing the Research and Creative Work Enterprise<\/a> (<span class=\"small-text\"><abbr title=\"Portable Document Format\">PDF<\/abbr><\/span>), one of four goals identified in the <a href=\"https:\/\/manoa.hawaii.edu\/wp\/wp-content\/uploads\/2020\/12\/manoa-2025-strategic-plan.pdf\">2015&#8211;25 Âé¶¹´«Ã½<\/a> (<span class=\"small-text\"><abbr title=\"Portable Document Format\">PDF<\/abbr><\/span>), updated in December 2020.<\/p>\n<p>&#8212;By <em>Marc Arakaki<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The <abbr>ALOHAnet<\/abbr> virtual symposium is on Wednesday, June 16, 2021.<\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[179,182,1467,9],"class_list":["post-143299","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-college-of-engineering","tag-engineering","tag-manoa-excellence-in-research","tag-uh-manoa","entry","has-media"],"aioseo_notices":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/posts\/143299","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/comments?post=143299"}],"version-history":[{"count":6,"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/posts\/143299\/revisions"}],"predecessor-version":[{"id":143308,"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/posts\/143299\/revisions\/143308"}],"wp:attachment":[{"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/media?parent=143299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/categories?post=143299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hawaii.edu\/news\/wp-json\/wp\/v2\/tags?post=143299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}