Method and device for dynamic cooperation resource distribution in heterogeneous network

Abstract

The invention provides a method and device for dynamic cooperation resource distribution in a heterogeneous network. The method comprises the following steps executed by an interference coordination module: A, collecting a direct parameter set, an indirect parameter set and a current ABS density or mode, wherein parameters in the direct parameter set are used to dynamically calculate a new ABS density; B, according to the direct parameter set, the current ABS density and a predefined parameter, dynamically calculating the new ABS density, and selecting a corresponding new ABS mode according to the new ABS density; and C, sending the new ABS mode. The interference coordinate module locates in a macro base station or a central cooperation node. On the basis of the scheme of the invention, according to a load condition of a current macro cell, load conditions of small cells and the number of the small cells in the macro cell, the optimum ABS mode can be calculated, and the calculation process is very simple and fast. And, for different initial conditions of given user distribution, the cell business amount, the cell switching bias configuration and the like, the rapid-convergence optimum ABS density can be obtained, and then the optimization process is relatively smooth and stable.

Description

technical field [0001] The present invention relates to communication networks, and in particular, to a method and device for dynamic cooperative resource allocation in heterogeneous networks. Background technique [0002] As one of the most popular and promising technologies for realizing small cells, LTE-A (LTE-A: LongTermEvolution: Advanced) proposes Enhanced Inter-Cell Interference Cancellation (eICIC: enhanced Inter-Cell InterferenceCoordination) technology and FeICIC (FeICIC :FurthereICIC) technology to serve the user equipment located in the cell range expansion (CRE: CellRangeExpansion) area in the small cell. Generally, due to the low transmit power of the small cell, the number of user equipments served by the small cell is usually small. [0003] In order to expand the actual cell coverage of small cells and allow more macro user services to be offloaded to small cells, LTE-A forms a CRE area with the help of handover bias and cell selection / reselection bias chan...

AI Technical Summary

Problems solved by technology

The disadvantages of this scheme based on the lookup table lookup are:

If only according to the lookup table in Table 1, it is inevitable to modify the ABS density frequently, causing the system to be unstable, and it is difficult to enter the algorithm convergence state;

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