Patent ID: 8675611
Filing Date: 2014-03-18
Classification: H04B

Abstract:
1. A method for selecting a transmission mode for a radio data transfer between a user equipment and a base station of a telecommunication network, the method comprising: determining a quality of a radio link, which extends between the user equipment and the base station, determining a radio load within the telecommunication network, and in response to the quality of the radio link crossing a first threshold and the radio load is equal to a first load, changing transmission mode using a slow Radio Resource Control (RRC) signaling message, wherein changing the transmission mode using the slow RRC signaling takes longer than a dynamic MIMO (Multi-Input-Multi-Output) switching; in response to the quality of the radio link crossing a second threshold and the radio load is equal to a second load, changing transmission mode by performing the dynamic MIMO switching; wherein the first load is larger than the second load; wherein the quality of the radio link being assigned to the second threshold is different than the quality of the radio link being assigned to the first threshold; and wherein the difference between the first threshold and the second threshold for a closed loop transmission mode selection is different than the difference between the first threshold and the second threshold for an open loop transmission mode selection.