A method for switching antenna mode from a first antenna mode to a second antenna mode in a multi-antenna port radio access node including logical antenna ports and physical antenna ports, wherein each physical antenna port is individually powered and the logical antenna ports are mapped to a first set of physical antenna ports in the first antenna mode to a second set of physical antenna ports in the second antenna mode, comprising the steps of: at a first point of time (t 1), receiving information triggering antenna mode switching; during a time interval (Δt) from the first point of time (t 1) to a second point of time (t 2), re-mapping the logical antenna ports and associated resource elements from the first set of physical antenna ports to the second set of physical antenna ports, characterized in that: the step of re-mapping the logical antenna ports and associated resource elements to the second set of physical antenna ports includes applying an intermediate antenna mapping matrix including at least one parameter α that is gradually increased from a first value α=0 to a second value α=1 during the time interval (Δt), wherein the parameter α is in the range of 0≤α≤1, and at the first value α=0, the radio access node is in the first antenna mode and at the second value α=1, the radio access node is in the second antenna mode; and at the second point of time (t 2), switching to the second antenna mode by changing supply of power to each physical antenna port represented in the first set of physical antenna ports but not in the second set. at a first point of time (t 1), receiving information triggering antenna mode switching; during a time interval (Δt) from the first point of time (t 1) to a second point of time (t 2), re-mapping the logical antenna ports and associated resource elements from the first set of physical antenna ports to the second set of physical antenna ports, characterized in that: the step of re-mapping the logical antenna ports and associated resource elements to the second set of physical antenna ports includes applying an intermediate antenna mapping matrix including at least one parameter α that is gradually increased from a first value α=0 to a second value α=1 during the time interval (Δt), wherein the parameter α is in the range of 0≤α≤1, and at the first value α=0, the radio access node is in the first antenna mode and at the second value α=1, the radio access node is in the second antenna mode; and at the second point of time (t 2), switching to the second antenna mode by changing supply of power to each physical antenna port represented in the first set of physical antenna ports but not in the second set. the step of re-mapping the logical antenna ports and associated resource elements to the second set of physical antenna ports includes applying an intermediate antenna mapping matrix including at least one parameter α that is gradually increased from a first value α=0 to a second value α=1 during the time interval (Δt), wherein the parameter α is in the range of 0≤α≤1, and at the first value α=0, the radio access node is in the first antenna mode and at the second value α=1, the radio access node is in the second antenna mode; and at the second point of time (t 2), switching to the second antenna mode by changing supply of power to each physical antenna port represented in the first set of physical antenna ports but not in the second set.