Patent ID: 9088318
Filing Date: 2015-07-21
Classification: H04B,H04L

Abstract:
1. A method in a controller node of a communication network, the method comprising: joint spatial coding, by the controller node, a symbol into a first spatial code text and into a second spatial code text different from the first spatial code text; grouping, by the controller node, transmit antennas of first and second base stations of the communication network into first and second transmit antenna groups based on a location of a coverage area of each of the transmit antennas; distributing the first spatial code text, by the controller node, distributing the second spatial code text, by the controller node, wherein the first and second base stations comprise an unequal number of transmit antennas, wherein the first transmit antenna group comprises one or more transmit antennas of the first and/ or the second base station, and the second transmit antenna group comprises one or more transmit antennas of the first and/ or the second base station not included in the first transmit antenna group, and wherein the first spatial code text is for transmission to a user equipment via the first transmit antenna group and the second spatial code text is for transmission to the user equipment via the second transmit antenna group; wherein the second spatial code text is a complex conjugate of the first spatial code text.