Patent ID: 9124327
Filing Date: 2015-09-01
Classification: H04B,H04W

Abstract:
1. A method for mobile telecommunication, comprising: receiving in a mobile communication terminal downlink signals from at least first and second cells that coordinate transmission of the downlink signals with one another; in the terminal, calculating channel feedback that is configured, based on the received downlink signals, to be used by the first and second cells in precoding a joint downlink transmission, which is transmitted jointly to the terminal from the first and second cells, the channel feedback calculated in the terminal being such that the first cell is enabled to precode a first signal destined for the terminal using a first precoding vector, the second cell is enabled to precode a second signal that is also destined for the terminal using a second precoding vector that differs in magnitude from the first precoding vector, and the first and second signals convey same data; and transmitting the channel feedback from the terminal, wherein calculating the channel feedback comprises calculating different first and second recommended magnitudes for the first and second precoding vectors, respectively, and calculating one or more of: