{"id":2605,"date":"2012-05-23T11:03:02","date_gmt":"2012-05-23T09:03:02","guid":{"rendered":"https:\/\/blogs.ua.es\/si\/?p=2605"},"modified":"2012-05-23T14:31:23","modified_gmt":"2012-05-23T12:31:23","slug":"interferencias-en-las-redes-inalambricas","status":"publish","type":"post","link":"https:\/\/blogs.ua.es\/si\/2012\/05\/23\/interferencias-en-las-redes-inalambricas\/","title":{"rendered":"Interferencias en las redes inal\u00e1mbricas"},"content":{"rendered":"

 <\/p>\n

Con cierta frecuencia nos llegan quejas de nuestros usuarios por una deficiente cobertura wifi o un mal servicio. En ocasiones el origen de los problemas puede estar en el punto de acceso que d\u00e9 cobertura a una zona determinada. Pero es mucho m\u00e1s probable que el usuario est\u00e9 sufriendo interferencias.<\/strong><\/p>\n

Aunque tengamos una configuraci\u00f3n correcta de eduroam, cuando seleccionemos la red y queramos conectarnos, las interferencias pueden provocar:<\/p>\n

– que la conexi\u00f3n tarde mucho tiempo en realizarse,<\/p>\n

– que la conexi\u00f3n incluso no pueda establecerse,<\/p>\n

– que aunque la conexi\u00f3n se establezca, \u00e9sta sea muy inestable.<\/p>\n

Estos problemas principlamente se deben a que el camino por donde circula la se\u00f1al inal\u00e1mbrica se ve interferido, ya sea por obst\u00e1culos f\u00edsicos<\/strong>, o por otras ondas de radio<\/strong>. Las ondas producidas por otros equipos (otros routers, tel\u00e9fonos inal\u00e1mbricos, radios, bluetooh, etc.) pueden utilizar la misma frecuencia y por tanto, interferir gravemente en la se\u00f1al wifi.\u00a0 El simple uso de un tel\u00e9fono inal\u00e1mbrico produce frecuentemente una desconexi\u00f3n de la red.<\/p>\n

 <\/p>\n

Recogemos aqu\u00ed algunos documentos que documentan las interferencias en las redes wifi.<\/strong><\/p>\n

 <\/p>\n

– Ambient Interference Effects in Wi-Fi Networks<\/a>, Department of Computer Science (University of Calgary), Sustainable IT Ecosystem Lab (HP Labs, Palo Alto). 14 p\u00e1gs, pdf, 4,42 MB.<\/p>\n

\u00abThis paper presents a measurement study on interference from six common devices that use the same 2.4 GHz ISM band as the IEEE 802.11 protocol. Using both controlled experiments and production environment measurements, we quantify the impact of these devices on the performance of 802.11 Wi-Fi networks. In our controlled experiments, we characterize the interference properties of these devices, as well as measure and discuss implications of interference in data, video, and voice traffic. Finally, we use measurements from a campus network to understand the impact of interference on the operational perfomance of the network. Overall, we find that the campus network is exposed to a large variety of non Wi-fi devices, and that these devices can have a significant impact on he interference level in the network<\/strong>.\u00bb<\/p>\n

 <\/p>\n

\"Interferences\"<\/a><\/p>\n

 <\/p>\n

– AirPort y Bluetooth: posibles fuentes de interferencia inal\u00e1mbrica<\/a>, Centro de ayuda de Apple.<\/p>\n

Cita como fuentes de interferencias: hornos microondas, fugas de RF de Direct Satellite Device (DSS), ciertas fuentes el\u00e9ctricas externas, tel\u00e9fonos, emisores de v\u00eddeo, altavoces inal\u00e1mbricos, algunos monitores externos y pantallas LCD, c\u00e1maras, intercomunicadores o cualquier otro dispositivo inal\u00e1mbrico que funcione en las frecuencias de 2,4 GHz o 5 GHz.<\/p>\n

En cuanto a barreras f\u00edsicas clasifica al cristal blindado y al hormig\u00f3n con un potencial alto de interferencia, y al m\u00e1rmol, los ladrillos y el agua con un potencial medio.<\/p>\n

 <\/p>\n

– Some Sources of 2.4 GHz Wi-Fi interference in the Field<\/a>, Sascha Schickler, Ingenuity Working.<\/p>\n

 <\/p>\n

– Make Your Wi-Fi Hi-Fi: The “Truth” About Wireless Signal Interference<\/a>, Yousif Hassan.<\/p>\n

\u00abIn summary, there are lots of different options with wireless networks and just as many potential sources of interference<\/strong>. A little strategic planning in your placement of the wireless access point will go a long way towards solving your physical interference problems and your electromagnetic interference problems. Another key is to understand that any electronic device that works without wires uses radio frequencies, more than likely<\/strong>. If it can send something “invisibly” over the air, it’s using radio waves. This includes cordless phones, baby monitors, remote-controlled devices (and the remotes), wireless network equipment, walkie-talkies, Bluetooth devices, and the like. Many of these devices, like TV remotes and remote-controlled toys, operate at such a low frequency (infrared, for instance) that it’s never an issue. But newer, more powerful devices can be problematic. Before buying any electronic device that transmits radio frequency data, look into its frequency range and make sure it does not conflict with your wireless network plans.\u00bb<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

  Con cierta frecuencia nos llegan quejas de nuestros usuarios por una deficiente cobertura wifi o un mal servicio. En ocasiones el origen de los problemas puede estar en el punto de acceso que d\u00e9 cobertura a una zona determinada. Pero es mucho m\u00e1s probable que el usuario est\u00e9 sufriendo interferencias. Aunque tengamos una configuraci\u00f3n … <\/p>\n

Continue reading “Interferencias en las redes inal\u00e1mbricas”<\/span><\/a><\/p>\n","protected":false},"author":797,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5464],"tags":[858],"class_list":["post-2605","post","type-post","status-publish","format-standard","hentry","category-recomendaciones-y-guias","tag-wifi"],"_links":{"self":[{"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/posts\/2605","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/users\/797"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/comments?post=2605"}],"version-history":[{"count":8,"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/posts\/2605\/revisions"}],"predecessor-version":[{"id":2610,"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/posts\/2605\/revisions\/2610"}],"wp:attachment":[{"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/media?parent=2605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/categories?post=2605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.ua.es\/si\/wp-json\/wp\/v2\/tags?post=2605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}