Patent Document ID: 9924372
Application ID: 15429377
Patent Flag: 1

Claim One:
1. A method of sharing a frequency spectrum in a frequency band between a first wireless network and a second coexisting wireless network having overlapping service coverage areas, the first wireless network comprising a plurality of nodes serving user equipment, the method comprising: in a host computer system comprising one or more processors and memory in the first wireless network: (a) determining a spectrum access time of the first wireless network to be reserved for the coexisting wireless network; and (b) determining a channel assignment and an optimized fractional spectrum access (FSA) profile for each of the nodes in the first wireless network, the FSA profile comprising a percentage of air time during which each node can access one or more assigned channels, wherein steps (a) and (b) comprise optimizing a utility function of the first wireless network, comprising searching for a spectrum access profile comprising a channel selection α and FSA profile β for the nodes in the first wireless network to satisfy an achieved network utility U equal to or greater than a predefined optimality ratio of an objective function, by iteratively calculating a local upper bound on the objective function through convex relaxation and a local lower bound on the objective function through a local search.