Patent ID: 8498194

Claim:
A method for controlling uplink power, comprising: determining at least two user equipments to be paired in a virtual Multiple Input Multiple Output system; and adjusting power of at least one of the user equipments according to orthogonality between the at least two user equipments, wherein, the orthogonality between the at least two user equipments is embodied by orthogonality of a channel matrix of the at least two user equipments, the orthogonality between the at least two user equipments is determined by approximating the channel matrix of the at least two user equipments to an orthogonal matrix, an expected power relationship between the at least two user equipments is obtained by approximating the channel matrix of the at least two user equipments to the orthogonal matrix; and the power of at least one of the at least two user equipments is adjusted based on the expected power relationship between the at least two user equipments.