Self-optimization in heterogeneous networks

A system for multi-cell optimization in a coordinated mode in a heterogeneous wireless network, comprising:

• a plurality of cells, wherein each cell includes a base station or a centralized server connected to the base station for each cell;
• a processor of the base station for each cell or of the centralized server configured to:
• define one or more cost functions for self-optimization criteria in the heterogeneous wireless network;
• and
• coordinately adjust one or more radio resources of cells or subsets of users in the cells in the heterogeneous wireless network to optimize the cost functions,
• wherein two or more users are divided into a first group that are interfered by a first neighbor cell, two or more users are divided into a second group that are not interfered by a second neighbor cell, and the first group and the second group are assigned different priorities;
• and
• a memory of the base station for each cell or of the centralized server coupled to the processor of the base station for each cell or of the centralized server and configured to provide the processor with instructions.

A method multi-cell optimization in a coordinated mode in a heterogeneous wireless network including a plurality of cells, wherein each cell includes a base station, the method comprising:

• receiving at each base station one or more targets for self-optimization criteria in the heterogeneous wireless network;
• and
• autonomously adjusting a radio resource of the base station to achieve the targets for the self-optimization criteria,
• wherein two or more of the targets are divided into a first group that are interfered by a first neighbor cell, two or more of the targets are divided into a second group that are not interfered by a second neighbor cell, and the first group and the second group are assigned different priorities.

A computer program product for autonomous self-optimization in a heterogeneous wireless network including a plurality of cells, wherein each cell includes a base station, the computer program product being embodied in a tangible non-transitory computer readable storage medium and comprising computer instructions for:

• receiving at each base station one or more targets for self-optimization criteria in the heterogeneous wireless network;
• and
• autonomously adjusting a radio resource of the base station to achieve the targets for the self-optimization criteria,
• wherein two or more of the targets are divided into a first group that are interfered by a first neighbor cell, two or more of the targets are divided into a second group that are not interfered by a second neighbor cell, and the first group and the second group are assigned different priorities.

A method for multi-cell optimization in a coordinated mode in a heterogeneous wireless network including a plurality of cells, wherein each cell includes a base station or a centralized server connected to the base station for each cell, the method comprising:

• defining one or more cost functions for self-optimization criteria in the heterogeneous wireless network;
• and
• coordinately adjusting one or more radio resources of cells or subsets of users in the cells in the heterogeneous wireless network to optimize the cost functions,
• wherein two or more users are divided into a first group that are interfered by a first neighbor cell, two or more users are divided into a second group that are not interfered by a second neighbor cell, and the first group and the second group are assigned different priorities.

A computer program product for multi-cell optimization in a coordinated mode in a heterogeneous wireless network including a plurality of cells, wherein each cell includes a base station or a centralized server connected to the base station for each cell, the computer program product being embodied in a tangible non-transitory computer readable storage medium and comprising computer instructions for:

• defining one or more cost functions for self-optimization criteria in the heterogeneous wireless network;
• and
• coordinately adjusting one or more radio resources of cells or subsets of users in the cells in the heterogeneous wireless network to optimize the cost functions,
• wherein two or more users are divided into a first group that are interfered by a first neighbor cell, two or more users are divided into a second group that are not interfered by a second neighbor cell, and the first group and the second group are assigned different priorities.