Study On Interference Coordination And Resource Scheduling Of Radio Resource Management

With the rapid development of mobile communication technique, customers’demand on high capacity system is increasing. Radio Resource Management (RRM)has already been one of the key issues in Code Division Multiple Access-based3rdGeneration Mobile Telecommunication Systems. Radio resource management hasalso been the key of influencing system performance and assuring customers’ QoS(Quality of Service) in4G Mobile Telecommunication Systems. The balance of userand maximize of capacity are the key performance indicators of wirelesscommunication system. This paper mainly works over RRM strategies, and lists aseries of basic technology of RRM such as channel allocation, power control andfrequency reuse. And a more indepth study conducted and analyzed the interferencecoordination of intercell and resource scheduling.(1) For the low performance of cell-edge users in OFDMA networks, animproved algorithm of interference coordination based on that the equal performancewill not be depressed is proposed, which can improve the performance of thecell-edge users. In order to treat the problem of the service of the users in cell-edgeand cell-center, combining with RRM technology, the users in cell-edge choosechannels priority to the users in cell-center, and controlled the power of them. Theresults indicate that the algorithm can improve the performance of users in cell-edgeand total the performance is not depressed.(2) Proportional Fair Scheduling (PFS) is aiming to utilize network resourcesefficiently while providing fairness among users. Recent progress in channelpredictions makes it possible for the scheduler to take into account the achievablerates of users in the upcoming transmission intervals. In this paper we investigate thePredictive PFS in a LTE system. Extensive simulations indicate improvements inboth the system throughput and fairness among the users compared to the existingmultichannel PFS method that does not use channel prediction. In the end, analgrithrm of conbind with Soft Frequency Reuse (SFR) has proposed，which hasbetter total thought while the number of users are large.