A method for use in user equipment "UE" device comprising first and second radio components on a single platform, comprising: detecting at the first radio component in-device coexistence interference from the second radio component; sending a coexistence interference indication message as a Radio Resource Control "RRC" message, the coexistence interference indication message comprising one or more proposed control parameters for establishing a coexistence mode for the first and second radio components by specifying a preferred frequency notification for the first radio component, wherein the preferred frequency notification indicates a fixed frequency boundary which defines usable frequencies for the first radio component which will not interfere with the second radio component, a variable frequency boundary which defines usable frequencies for the first radio component which will not interfere with the second radio component, a frequency boundary which defines unusable frequencies for the first radio component which will interfere with the second radio component, or a transmission scheme used by the second radio component to implicitly specify a frequency band used by the second radio component; wherein the one or more proposed control parameters includes a keeping time parameter that specifies a time duration for maintaining the UE device in the coexistence mode; and receiving a response message comprising one or more control parameters for establishing a new frequency for the first radio component. detecting at the first radio component in-device coexistence interference from the second radio component; sending a coexistence interference indication message as a Radio Resource Control "RRC" message, the coexistence interference indication message comprising one or more proposed control parameters for establishing a coexistence mode for the first and second radio components by specifying a preferred frequency notification for the first radio component, wherein the preferred frequency notification indicates a fixed frequency boundary which defines usable frequencies for the first radio component which will not interfere with the second radio component, a variable frequency boundary which defines usable frequencies for the first radio component which will not interfere with the second radio component, a frequency boundary which defines unusable frequencies for the first radio component which will interfere with the second radio component, or a transmission scheme used by the second radio component to implicitly specify a frequency band used by the second radio component; wherein the one or more proposed control parameters includes a keeping time parameter that specifies a time duration for maintaining the UE device in the coexistence mode; and wherein the preferred frequency notification indicates a fixed frequency boundary which defines usable frequencies for the first radio component which will not interfere with the second radio component, a variable frequency boundary which defines usable frequencies for the first radio component which will not interfere with the second radio component, a frequency boundary which defines unusable frequencies for the first radio component which will interfere with the second radio component, or a transmission scheme used by the second radio component to implicitly specify a frequency band used by the second radio component; wherein the one or more proposed control parameters includes a keeping time parameter that specifies a time duration for maintaining the UE device in the coexistence mode; and receiving a response message comprising one or more control parameters for establishing a new frequency for the first radio component.