{"id":667,"date":"2019-01-22T10:55:40","date_gmt":"2019-01-22T10:55:40","guid":{"rendered":"http:\/\/lora.vsb.cz\/?page_id=667"},"modified":"2021-06-24T08:39:18","modified_gmt":"2021-06-24T08:39:18","slug":"simulation-of-network-coverage","status":"publish","type":"page","link":"https:\/\/lora.vsb.cz\/index.php\/simulation-of-network-coverage\/","title":{"rendered":"Simulation of Network Coverage"},"content":{"rendered":"<h2><strong><span style=\"color: #993366;\">Simulations using RADIOMOBILE tool<\/span><\/strong><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-335 aligncenter\" src=\"http:\/\/lora.vsb.cz\/wp-content\/uploads\/2017\/12\/radiomobile-300x300.png\" alt=\"\" width=\"55\" height=\"55\" srcset=\"https:\/\/lora.vsb.cz\/wp-content\/uploads\/2017\/12\/radiomobile-300x300.png 300w, https:\/\/lora.vsb.cz\/wp-content\/uploads\/2017\/12\/radiomobile-150x150.png 150w, https:\/\/lora.vsb.cz\/wp-content\/uploads\/2017\/12\/radiomobile.png 508w\" sizes=\"auto, (max-width: 55px) 100vw, 55px\" \/><\/h2>\n<p>We use freeware software <strong><a href=\"http:\/\/www.ve2dbe.com\/english1.html\">Radio Mobile<\/a><\/strong> for network coverage planning. This software uses ITS Irregular Terrain Model (Longley-Rice) a method for predicting the attenuation of radio signals for a telecommunication link in the frequency range of 20 MHz to 20 GHz.<\/p>\n<h4><span style=\"color: #993300;\"><strong>Setting of a simulation task<\/strong><\/span><\/h4>\n<h5>Gateway&#8217;s parameters:<\/h5>\n<ul>\n<li><strong>Tx-power: 4 dBm<\/strong> as we use 10 dBi antenna and the eirp limit is 14 dBm<\/li>\n<li><strong>Rx-sensitivity: -120 dBm<\/strong> &#8211; even iC880 has -137 dBm sensitivity, we wittingly degrade this value with two intentions:\n<ul>\n<li>to compensate missing house-buildings in our simulation model<\/li>\n<li>as the practical measurements shown, we hardly any receive signal &lt; -120 dBm<\/li>\n<\/ul>\n<\/li>\n<li><strong>Antenna gain: 10 dBi<\/strong><\/li>\n<li><strong>Other losses: 1 dB<\/strong> losses on RF connectors, Lightning-arrester, coaxial cables anf UFL-to-SMA pigtail (it&#8217;s a measured value).<\/li>\n<\/ul>\n<h4><span style=\"color: #993300;\"><strong>Sensor&#8217;s parameters:<\/strong><\/span><\/h4>\n<ul>\n<li><strong>Tx-pwr: 14 dBm<\/strong> as we use 0 dBi antenna<\/li>\n<li><strong>Rx-sensitivity: -120 dBm<\/strong> &#8211; even various RF modems have a different sensitivity around-120 dBm<\/li>\n<li><strong>Antenna gain: 0 dBi<\/strong><\/li>\n<li><strong>Other losses: 0 dB<\/strong> as we expect a short whip antenna directly connected to RF modem.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2><strong><span style=\"color: #993366;\">Simulations using RADIOLAB tool<\/span><\/strong><\/h2>\n<p>project name: <strong>Coverage Optimization of \u200b\u200bthe LoRaWAN Experimental Network<\/strong><\/p>\n<p>(<a href=\"https:\/\/fondrozvoje.cesnet.cz\/\">FR CESNET<\/a> project number 660\/2020)<\/p>\n<p>This project was solved in the period 06\/20 &#8211; 06\/21 and dealt with the area coverage of the LoRaWAN signal. The analysis of coverage was performed using the software <a href=\"https:\/\/crcdata.cz\/\">RadioLab<\/a>, which allows working with 3D display of objects, data and results of computational applications on the basis of 3D terrain relief and general vector map data. The ITU-R P.1812-4 Propagation Model was used in the analysis. This model is used for predicting the attenuation of radio signals for a telecommunication link in the frequency range of 30 MHz to 3000 MHz.<\/p>\n<p>The solution of the project enabled a detailed analysis and accuracy improvement of the area coverage visualization of \u200b\u200bthe LoRaWAN experimental network (for more information click <a href=\"http:\/\/lora.vsb.cz\/lora-simulation-radiolab\/\">here<\/a>).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Simulations using RADIOMOBILE tool We use freeware software Radio Mobile for network coverage planning. This software uses ITS Irregular Terrain Model (Longley-Rice) a method for predicting the attenuation of radio signals for a telecommunication link in the frequency range of 20 MHz to 20 GHz. Setting of a simulation task Gateway&#8217;s parameters: Tx-power: 4 dBm [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-667","page","type-page","status-publish","hentry","post"],"_links":{"self":[{"href":"https:\/\/lora.vsb.cz\/index.php\/wp-json\/wp\/v2\/pages\/667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lora.vsb.cz\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/lora.vsb.cz\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/lora.vsb.cz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lora.vsb.cz\/index.php\/wp-json\/wp\/v2\/comments?post=667"}],"version-history":[{"count":8,"href":"https:\/\/lora.vsb.cz\/index.php\/wp-json\/wp\/v2\/pages\/667\/revisions"}],"predecessor-version":[{"id":1160,"href":"https:\/\/lora.vsb.cz\/index.php\/wp-json\/wp\/v2\/pages\/667\/revisions\/1160"}],"wp:attachment":[{"href":"https:\/\/lora.vsb.cz\/index.php\/wp-json\/wp\/v2\/media?parent=667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}