COORDINATION OF RESOURCE-ALLOCATION IN CELLULAR COMMUNICATIONS NETWORK

摘要

The allocation of resources in different cells of a group of cells in a cellular communications network is coordinated using a two-level approach. A centralized controller (CONT_CENT) determines resource-allocation coordination decisions (G-RCD) that optimize the performance of the group of cells. The centralized controller also calculates, for each cell of the group, local coordination assistance information (L-CAI) indicating how the performance of the other cooperating cells would be affected if this cell were to depart from the centrally-set resource-allocation coordination decisions. A local controller (CONT_LOC) updates the centrally-set resource-allocation coordination decisions (G-RCD) in respect of a given cell based on up-to-date local knowledge of user channel conditions and / or interference values for this cell, provided that the updating will produce a net performance gain for the cooperating cells considered as a group. The local controller evaluates whether the updating will produce a globalperformance gain or loss using the L-CAI.