Patent ID: 9432167
Filing Date: 2016-08-30
CPC Classification: H04L,H04W

Claim Text:
1. A method, comprising: determining, at a base station in a wireless network, interference for a plurality of pairs of cells, wherein each pair of cells is between an individual one of one or more serving cells formed by the base station and an individual one of other cells that surround the one or more serving cells; and allocating, at the base station, values for physical cell identifications for the one or more serving cells based on the interference for the plurality of pairs of cells; wherein allocating values for physical cell identifications for the one or more serving cells further comprises solving the following problem: where Trace( ) is a trace operation, Γ G z PCI is a grouping matrix whose element at row i column j is given by where p z represent a z'th candidate solution for the physical cell identifications, and the values for the physical cell identifications for the one or more serving cells are p opt , which is determined by the G z PCI that makes the equation in the problem true.