METHOD, DEVICE AND SYSTEM FOR DETECTING INTERFERENCES

A method for detecting interferences in wireless networks is disclosed. A salient idea is to use a first access point for detecting an interference disturbing a wireless device associated with a second access point, wherein the device at the origin of the interference is in the range of the first ac...

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Bibliographische Detailangaben
Hauptverfasser: Thierry FILOCHE, Ghislaine PONDAVEN, Christoph NEUMANN, Pascal Le GUYADEC
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:A method for detecting interferences in wireless networks is disclosed. A salient idea is to use a first access point for detecting an interference disturbing a wireless device associated with a second access point, wherein the device at the origin of the interference is in the range of the first access point, but not in the range of the second access point. Leveraging on the difference of coverage between different wireless networking technologies, the first access point is capable of detecting both a data traffic of a second access point and a short range interfering device in a same frequency channel. More precisely, by measuring a level of strength of a signal received in the frequency channel at a period of time where no data traffic of the second access point is detected, the first access point is capable of detecting an interference according to the measured signal. The detected interference corresponds to another device using the frequency channel of the second access point, w ithout communicating with the second access point. As the interference detected by the first access point may not be detectable by the second access point (because not being in the range of the second access point although disturbing some of its associated devices), the first access point advantageously sends an information item indicating the interference has been detected. Sending such indication is advantageous as it allows the second access point to detect an interfering device, even if not being in its range. Se describe un método para detectar interferencias en redes inalámbricas. Una idea destacada es utilizar un primer punto de acceso para detectar una interferencia que perturba un dispositivo inalámbrico asociado con un segundo punto de acceso, donde el dispositivo en el origen de la interferencia está en el rango del primer punto de acceso, pero no en el rango del segundo punto de acceso. Aprovechando la diferencia de cobertura entre diferentes tecnologías de red inalámbrica, el primer punto de acceso tiene la capacidad de detectar ambos, un tráfico de datos de un segundo punto de acceso y un dispositivo interferente de rango corto en un mismo canal de frecuencia. De manera más precisa, midiendo un nivel de intensidad de una señal recibida en el canal de frecuencia en un periodo de tiempo donde no se detectó tráfico de datos del segundo punto de acceso, el primer punto de acceso tiene la capacidad de detectar una interferencia de acuerdo con la señal medida. La inte