A method (300, 500) for reduction of interference between a primary apparatus and a secondary apparatus of a system, wherein activity of the primary apparatus causes interference that disturbs activity of a secondary apparatus and/or activity of the secondary apparatus causes interference that disturbs activity of the primary apparatus, wherein the secondary apparatus is characterized by a best case minimum amount of time required to perform activity and also by a worst case minimum amount of time required to perform activity, wherein the worst case minimum amount of time required to perform activity is greater than or equal to the best case minimum amount of time required to perform activity, the method comprising: ascertaining a first future moment when an activity status of the primary apparatus will change from active to inactive; ascertaining whether a duration of primary apparatus inactivity beginning at the first future moment will not be less than the secondary apparatus' best case minimum amount of time required to perform activity; and in response to ascertaining that the duration of primary apparatus inactivity beginning at the first future moment will not be less than the secondary apparatus' best case minimum amount of time required to perform activity, asserting a primary apparatus inactivity signal at a moment in advance of the first future moment, wherein the primary apparatus inactivity signal indicates upcoming primary apparatus inactivity scheduled to begin at the first future moment in time, scheduling the primary apparatus's own activity such as to ensure that it becomes inactive no later than at the first future moment in time; wherein an amount of time between the moment in advance of the first future moment and the first future moment is equal to a primary pre-notice start time that is greater than or equal to the secondary apparatus' worst case minimum amount of time required to perform activity minus the secondary apparatus' best case minimum amount of time required to perform activity; ascertaining a second future moment in time when an activity status of the primary apparatus will change from inactive to active; deasserting the primary apparatus inactivity signal at a moment in advance of the second future moment, wherein deassertion of the primary apparatus inactivity signal indicates upcoming primary apparatus activity scheduled to begin at the second future moment in time; and scheduling the primary apparatus' own activity such as to ensure that it becomes active no earlier than at the second future moment in time when the primary apparatus will again become active. ascertaining a first future moment when an activity status of the primary apparatus will change from active to inactive; ascertaining whether a duration of primary apparatus inactivity beginning at the first future moment will not be less than the secondary apparatus' best case minimum amount of time required to perform activity; and in response to ascertaining that the duration of primary apparatus inactivity beginning at the first future moment will not be less than the secondary apparatus' best case minimum amount of time required to perform activity, asserting a primary apparatus inactivity signal at a moment in advance of the first future moment, wherein the primary apparatus inactivity signal indicates upcoming primary apparatus inactivity scheduled to begin at the first future moment in time, scheduling the primary apparatus's own activity such as to ensure that it becomes inactive no later than at the first future moment in time; wherein an amount of time between the moment in advance of the first future moment and the first future moment is equal to a primary pre-notice start time that is greater than or equal to the secondary apparatus' worst case minimum amount of time required to perform activity minus the secondary apparatus' best case minimum amount of time required to perform activity; ascertaining a second future moment in time when an activity status of the primary apparatus will change from inactive to active; deasserting the primary apparatus inactivity signal at a moment in advance of the second future moment, wherein deassertion of the primary apparatus inactivity signal indicates upcoming primary apparatus activity scheduled to begin at the second future moment in time; and scheduling the primary apparatus' own activity such as to ensure that it becomes active no earlier than at the second future moment in time when the primary apparatus will again become active.