Patent ID: 8054225

Claim:
A method of wireless directional beam-forming transmission between a first device and a second device, the method comprising the steps of: conducting one or more first omni-directional transmissions between the first device and a third device; conducting one or more second omni-directional transmissions between the second device and the third device; and determining directional information for directional beam-forming transmissions between the first and second devices based on the first and second omni-directional transmissions, wherein the step of determining the directional information comprises a step of determining, at the third device, fifth and sixth directions of arrival for the first and second devices, respectively, of the directional beam-forming transmissions between the first and second devices with respect to a reference direction of the third device; and the step of determining the fifth and sixth directions of arrival comprises a step of determining a ratio of a distance between the first device and the third device to a distance between the second device and the third device.