Patent ID: 9197301
Filing Date: 2015-11-24
Classification: H04B

Abstract:
1. A method for configuring a transmission mode, comprising: obtaining channel matrix information, wherein the channel matrix information is any one of the following (a) and (b): (a) a precoding matrix indicator, wherein an inner product between a precoding matrix indicated by the precoding matrix indicator and a current uplink channel matrix of a terminal corresponds to a highest value, (b) a current downlink precoding matrix indicator of the terminal, determining, according to the channel matrix information, performance of data transmission performed by adopting a closed-loop mode and an open-loop mode; and selecting a data transmission mode according to the determined performance of the data transmission, wherein the data transmission mode comprises the open-loop mode, the closed-loop mode; wherein, the determining, according to the channel matrix information, the performance of the data transmission performed by adopting the closed-loop mode and the open-loop mode, and the selecting the data transmission mode according to the determined performance of the data transmission comprises any one of the following (c) and (d): (c) if a change probability of two adjacent precoding matrix indicators is greater than a preset change probability threshold, selecting the open-loop mode to be the data transmission mode; and (d) if the change probability of two adjacent precoding matrix indicators is smaller than a preset change probability threshold, selecting the closed-loop mode to be the data transmission mode.