METHOD AND APPARATUS FOR REDUCING INTER-CELL INTERFERENCE

摘要

A method is described for reducing interferences in a wireless network, by: identifying cells which experience more interference than others; identifying a group of PRBs that their transmissions are subjected to more interference than other concurrent transmissions; identifying UEs associated with the group of PRBs, and determining whether the location of the UEs is at the cells' edges; selecting a pair of UEs where one member is located at a first cell's edge and the other is located either (i) at a second cell, not included within a neighbors' list of the first cell, or (ii) at the core or remote edge of a second cell. In case (i), the second cell is introduced to the first cell neighbors' list, and in case (ii) the other UE is falsely defined as a UE located at the near second cell's edge. Then, ICIC procedure is invoked for that pair of UEs.

主权项

1. A method comprising:
identifying, for a cluster of wireless cells comprising a plurality of wireless cells, a first wireless cell that is a most interfered wireless cell of the cluster of wireless cells; identifying, for a plurality of radio resources available to the first wireless cell, one or more most interfered radio resources of the plurality of radio resources; identifying one or more user equipment (UE) associated with the one or more most interfered radio resources for the first wireless cell; identifying at least one UE associated with the one or more most interfered radio resources for the first wireless cell as a cell edge UE; identifying at least one other UE associated with the one or more most interfered radio resources; determining whether the at least one other UE is one of:
a cell edge UE served by a second wireless cell of the cluster of wireless cells, wherein the second wireless cell is not identified in a neighbor list of the first wireless cell; ora cell core UE served by a second wireless cell of the cluster of wireless cells, wherein the second wireless cell is identified in a neighbor list of the first wireless cell but no inter-cell interference coordination is provided for the cell core UE; including the second wireless cell in the neighbor list of the first wireless cell if the at least one other UE is determined to be a cell edge UE for the second wireless cell that is not identified in the neighbor list of the first wireless cell; defining the at least one other UE as a cell edge UE if the at least one other UE is determined to be a cell core UE for the second wireless cell that is identified in the neighbor list of the first wireless cell; and invoking an inter-cell interference coordination procedure between the first wireless cell and the second wireless cell.