Method for balancing inter-cell load in LTE mobile communication network

Abstract

The invention provides a method for balancing inter-cell load in an LTE mobile communication network. The invention reduces the range of seeking a terminal which meets load balancing switching by marking the terminal which meets the requirement of load balancing switching by utilizing a balancing event measurement report, thereby shortening the load balancing execution time; and in addition, the invention better realizes the inter-cell load balancing through periodic load balancing processing and two-step load balancing switching processing, prevents new load unbalancing generated by the load balancing process, enhances the load balancing convergence rate, effectively prevents the ping-pong effect, effectively reduces the network overhead because neighbour cells can report respective resource states only after a current cell is overload, enhances the utility ratio of wireless resources and reduces the dropped call rate.

Description

technical field [0001] The invention relates to a load balancing method, in particular to a load balancing method between small cells in an LTE (Long Term Evolution) long-term evolution mobile communication network. Background technique [0002] The task of load balancing is to deal with unbalanced traffic among multiple cells. By balancing the traffic distribution among cells, the utilization rate of wireless resources is improved, the QoS of ongoing sessions is kept at a reasonable level, and the call drop rate is reduced. A general load balancing method may require some terminals to perform handover or cell reselection to balance the load status among cells. [0003] The LTE system achieves the purpose of load balancing by means of operations such as switching. Due to the mobility of the terminal, the terminal can reside in any cell and switch to the optimal cell. However, in some cases, such as lack of cell resources, the network can force the terminal to switch to ano...

AI Technical Summary

Problems solved by technology

With this method, the selection of the target cell is more accurate, but the load balancing process is controlled by the light-loaded cell, and there is a lack of information about the handover terminal, which may initiate some invalid load-sharing handover requests, which increases the network overhead; no matter whether there is an overloaded cell or not , each cell has been exchanging location information, which also increases network overhead; at the same time, regardless of whether there is an overload in the cell, as long as there are two adjacent cells whose load exceeds the threshold, the load balancing process will be initiated, which virtually increases the load balancing adjustment. frequency, reducing network operating efficiency

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