Abstract: In a first aspect, requests for carrier aggregation scheduling for a user equipment are received (S41) from a first cell used for carrier aggregation for the user equipment in a cellular communications network and n second cells of the cellular communications network, used for the carrier aggregation. The requests include a first scheduling decision of the first cell and n second scheduling decisions of the n second cells. It is checked (S42) whether or not the requests exceed limits of the user equipment, and the n second scheduling decisions are modified (S43) according to predefined rules such that the requests do not exceed the limits of the user equipment. In a second aspect, limits of the user equipment are increased by a margin (S51), the increased limits are split onto active cells of the first and n second cells according to a predefined rule (S52), and the margin is controlled (S54) dependent on whether the increased and split limits are exceeded or not by the requests (S53).

Abstract: In a first aspect, requests for carrier aggregation scheduling for a user equipment are received (S41) from a first cell used for carrier aggregation for the user equipment in a cellular communications network and n second cells of the cellular communications network, used for the carrier aggregation. The requests include a first scheduling decision of the first cell and n second scheduling decisions of the n second cells. It is checked (S42) whether or not the requests exceed limits of the user equipment, and the n second scheduling decisions are modified (S43) according to predefined rules such that the requests do not exceed the limits of the user equipment. In a second aspect, limits of the user equipment are increased by a margin (S51), the increased limits are split onto active cells of the first and n second cells according to a predefined rule (S52), and the margin is controlled (S54) dependent on whether the increased and split limits are exceeded or not by the requests (S53).

Abstract: It is described a method for informing a user equipment of an activity status of a second communication carrier within a cellular network, wherein the user equipment is served by a base station and is adapted to communicate with the base station via a first communication carrier being assigned to the base station. Signals between the base station and the user equipment are transmittable using the first communication carrier and, if the second communication carrier is activated, using in addition the second communication carrier, wherein the first communication carrier is divided into subframes. The method includes sending an activity signal from the base station to the user equipment, wherein the activity signal includes information concerning the activity status of the second communication carrier, and re-sending the activity signal from the base station to the user equipment during predefined subframes.

Abstract: Requests for carrier aggregation scheduling for a user equipment are received from a first cell used for carrier aggregation and n second cells. The requests include a first scheduling decision of the first cell and n second scheduling decisions of the n second cells. It is checked whether or not the requests exceed limits of the user equipment, and the n second scheduling decisions are modified according to predefined rules such that the requests do not exceed the limits. Limits of the user equipment are increased by a margin, the increased limits are split onto active cells of the first and n second cells according to a predefined rule, and the margin is controlled dependent on whether the increased and split limits are exceeded or not by the requests. If they are exceeded, the n second scheduling decisions may be modified.

Abstract: It is described a method for informing a user equipment of an activity status of a second communication carrier within a cellular network, wherein the user equipment is served by a base station and is adapted to communicate with the base station via a first communication carrier being assigned to the base station. Signals between the base station and the user equipment are transmittable using the first communication carrier and, if the second communication carrier is activated, using in addition the second communication carrier, wherein the first communication carrier is divided into subframes. The method includes sending an activity signal from the base station to the user equipment, wherein the activity signal includes information concerning the activity status of the second communication carrier, and re-sending the activity signal from the base station to the user equipment during predefined subframes.