Dynamic carrier sensing thresholds

H - Electricity – 04 – L

Patent

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H04L 12/40 (2006.01)

Patent

CA 2646483

Systems and methodologies are described that facilitate communication in a wireless network environment. In particular, access points can dynamically adjust transmit power and/or carrier-sensing thresholds to allow multiple access points to communicate concurrently. In aspects, access points exchange node information, including RSSI and node addresses, of nearby nodes. The node information can be utilized to detect hidden nodes and estimate interference levels. Transmit power and/or carrier-sensing thresholds can be modified as a function of distance between source and destination access points, interference from hidden nodes, transmission rates, and/or path loss.

L'invention concerne des systèmes et des méthodologies qui facilitent la communication dans un environnement de réseau sans fil. En particulier, des points d'accès peuvent régler dynamiquement des seuils de détection de porteuses et/ou de puissance d'émission pour permettre à des points d'accès multiples de communiquer simultanément. Dans certains aspects, des points d'accès échangent des informations de nAEuds, y compris des adresses de nAEuds et le RSSI, de nAEuds voisins. Les informations de nAEuds peuvent être utilisées pour détecter des nAEuds cachés et estimer des niveaux d'interférence. Des seuils de détection de porteuses et/ou de puissance d'émission peuvent être modifiés en fonction de la distance entre des points d'accès sources et destinataires, de l'interférence provenant de nAEuds cachés, des débits de transmission et/ou de l'affaiblissement de propagation.

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