Backhaul communication for interference management

H - Electricity – 04 – L

Patent

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H04L 12/56 (2006.01)

Patent

CA 2679349

System(s) and method(s) are provided for inter-cell interference management in a wireless communication system. A base station perform interference management by conveying and receiving load indicator messages over a backhaul communication link to disparate neighboring base stations that serve interfering mobile stations. Reporting of load indicators takes place according to a reporting policy that is event-based, and accounts for variations of interference metrics over available time-frequency resources. Communication with neighboring base stations is limited to a monitoring interference set, which can be determined statically, according to deployment characteristics of a wireless network, or the set can be adjusted dynamically according to a set of received UL signals or a set of DL CQI measurement reports. Reporting policy and interference set can be autonomously adapted to optimize backhaul traffic as well as interference control.

Système(s) et procédé(s) destinés à la gestion du brouillage intercellulaire dans un système de communication sans fil. Une station de base assure la gestion du brouillage en échangeant des messages d'indicateur de charge, par le biais d'une liaison terrestre, avec différentes stations de base voisines qui desservent des stations mobiles provoquant le brouillage. Les rapports des indicateurs de charge respectent une politique spécifique fondée sur le déclenchement d'événements, et tiennent compte des variations des mesures de brouillage sur des ressources temps/fréquence disponibles. La communication avec les stations de base voisines est limitée à la surveillance d'un ensemble de brouillage, qui peut être déterminé statiquement, en fonction des caractéristiques de déploiement d'un réseau sans fil. Ledit ensemble de brouillage peut aussi être ajusté dynamiquement en fonction d'un ensemble de signaux UL reçus ou d'un ensemble de rapports de mesures CQI DL. L'ensemble de brouillage et la politique concernant les rapports peuvent être adaptés de manière autonome afin d'optimiser le trafic acheminé par le réseau terrestre ainsi que la maîtrise du brouillage.

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