{"id":5798,"date":"2020-10-28T10:23:28","date_gmt":"2020-10-28T10:23:28","guid":{"rendered":"https:\/\/www.beaconzone.co.uk\/blog\/?p=5798"},"modified":"2020-10-28T10:26:20","modified_gmt":"2020-10-28T10:26:20","slug":"understanding-bluetooth-le-reliability","status":"publish","type":"post","link":"https:\/\/www.beaconzone.co.uk\/blog\/understanding-bluetooth-le-reliability\/","title":{"rendered":"Understanding Bluetooth LE Reliability"},"content":{"rendered":"\n<p>We have previously written about <a href=\"https:\/\/www.beaconzone.co.uk\/blog\/bluetooth-le-on-the-factory-floor\/\">Bluetooth LE on the Factory Floor<\/a>  and <a href=\"https:\/\/www.beaconzone.co.uk\/blog\/why-bluetooth-le-scanning-doesnt-always-see-devices-the-first-time\/\">Why Bluetooth LE Scanning Doesn\u2019t Always See Devices (the First Time)<\/a>.<\/p>\n\n\n\n<p>There&#8217;s a new informative paper by <a rel=\"noreferrer noopener\" href=\"https:\/\/twitter.com\/bluetooth_mdw\" target=\"_blank\">Martin Woolley<\/a> of the Bluetooth SIG on <a rel=\"noreferrer noopener\" href=\"https:\/\/www.bluetooth.com\/bluetooth-resources\/understanding-reliability-in-bluetooth-technology\/\" target=\"_blank\">How Bluetooth\u00ae Technology Makes Wireless Communication Reliable<\/a>. It describes in detail how radio collisions, multi-path propagation, time-dispersion, transmitter-receiver synchronisation, signal strength, receiver sensitivity and buffer overflow can collude to make radio communications unreliable.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"695\" height=\"208\" src=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2020\/10\/bluetoothchannels.png\" alt=\"\" class=\"wp-image-5799\" srcset=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2020\/10\/bluetoothchannels.png 695w, https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2020\/10\/bluetoothchannels-300x90.png 300w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/figure>\n\n\n\n<p>The paper explains how Bluetooth modulation schemes, CRC checks, multiple channels, coded PHY, adaptive frequency hopping, flow control and the ATT protocol work to make Bluetooth LE reliable.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"658\" height=\"353\" src=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2020\/10\/bluetoothleadvertisingandscanning.png\" alt=\"\" class=\"wp-image-5800\" srcset=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2020\/10\/bluetoothleadvertisingandscanning.png 658w, https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2020\/10\/bluetoothleadvertisingandscanning-300x161.png 300w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/figure>\n\n\n\n<p>The paper also takes a look how Bluetooth Mesh has been designed to achieve reliable communication.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We have previously written about Bluetooth LE on the Factory Floor and Why Bluetooth LE Scanning Doesn\u2019t Always See Devices (the First Time). There&#8217;s a new informative paper by Martin Woolley of the Bluetooth SIG on How Bluetooth\u00ae Technology Makes Wireless Communication Reliable. It describes in detail how radio collisions, multi-path propagation, time-dispersion, transmitter-receiver synchronisation, &hellip; <a href=\"https:\/\/www.beaconzone.co.uk\/blog\/understanding-bluetooth-le-reliability\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Understanding Bluetooth LE Reliability&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,183],"tags":[],"_links":{"self":[{"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/posts\/5798"}],"collection":[{"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=5798"}],"version-history":[{"count":3,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/posts\/5798\/revisions"}],"predecessor-version":[{"id":5804,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/posts\/5798\/revisions\/5804"}],"wp:attachment":[{"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=5798"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=5798"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=5798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}