Patent ID: 8094606

Claim:
A communication system comprising: a hub with uplink power control having a power control margin corresponding to a magnitude of a hub side uplink fade condition that can be overcome by the uplink power control; a repeater; and a remote, the hub is configured to evaluate a value of a first predetermined function at an arithmetic combination of (a) the power control margin of the hub, (b) a predetermined carrier-to-noise ratio CN HubSCPCCS of data transmitted from the hub to the repeater and back to the hub using a first signal under a clear sky condition, and (c) a measured carrier-to-noise ratio CN Hubsignal1 of data transmitted from the hub to the repeater and back to the hub using the first signal, determine an external condition to be a deep fade condition when a magnitude of the external condition is greater than a difference between the clear sky condition and an evaluated value of a second predetermined function at the power control margin of the hub, and adjust a transmission power of the remote depending on the external condition determined to be the deep fade condition based on (i) the measured carrier-to-noise ratio CN Hubsignal1 of data transmitted from the hub to the repeater and back to the hub using the first signal, (ii) a measured carrier-to-noise ratio CN Hubsignal2 of data transmitted from the remote to the hub via the repeater using a second signal, (iii) the predetermined carrier-to-noise ratio CN HubSCPCCS of data transmitted from the hub to the repeater and back to the hub using the first signal under the clear sky condition, (iv) a predetermined carrier-to-noise ratio CN HubTDMACS of data transmitted from a reference remote to the repeater and back to the hub using the second signal under the clear sky condition, and (v) the evaluated value of the first predetermined function based on the power control margin of the hub.