Enhanced in-device coexistence interference avoidance using predetermined downlink channel
View Patent ↗A method, system and device are provided for avoiding in-device coexistence interference between different radio technologies deployed in adjacent bands on the same device by allocating a non-interfering downlink signaling channel for downlink reception of interference avoidance instructions at the UE device. In operation, a user equipment device detects IDC interference and sends an IDC indication message to the radio network to get an appropriate solution, but instead of waiting at the current frequency to receive the IDC response from the radio network, the user equipment device moves to a non-interfering downlink signaling channel for downlink reception of interference avoidance instructions.
1. A method for use in user equipment (UE) device, comprising:
detecting, at a long term evolution (LTE) radio component, in-device coexistence interference at a first channel frequency and unavailable channel frequencies;
sending a coexistence interference indication message to a radio access network, wherein the coexistence interference indication message indicates the in-device coexistence interference and the unavailable channel frequencies; and
in response to a response message comprising one or more control parameters for establishing a second channel frequency for the LTE radio component being received within a predetermined transition time period, enabling the LTE radio component to use the second channel frequency based on the one or more control parameters, wherein the response message is received at a downlink signaling channel frequency that is different from the first channel frequency.
2. The method of claim 1 , wherein the in-device coexistence interference is caused by a second radio component comprising a Global Navigation Satellite System (GNSS) component or a component operating in an Industrial, Science and Medical (ISM) frequency band.
3. The method of claim 1 , wherein detecting the in-device coexistence interference and the unavailable channel frequencies comprises receiving an internal message that a second radio component is enabled.
4. The method of claim 1 , wherein detecting the in-device coexistence interference and the unavailable channel frequencies comprises receiving an internal message identifying a transmission frequency band being used by a second radio component.
5. The method of claim 1 , wherein detecting the in-device coexistence interference and the unavailable channel frequencies comprises measuring at the LTE radio component in-device coexistence interference from a second radio component.
6. The method of claim 1 , wherein the response message is received at a downlink signaling channel frequency that is specified as a system parameter which defines a frequency band not experiencing in-device coexistence interference.
7. The method of claim 1 , wherein the response message is received at a downlink signaling channel frequency that is specified in a Radio Resource Control (RRC) message sent by the radio access network or as a system information block broadcast by the radio access network.
8. The method of claim 7 , where the RRC message comprises at least one of an RRCConnectionReconfiguration message, a UEInformationRequest message, an RRCConnectionRequest message, an RRCConnectionReconfigurationComplete message, an RRCConnectionReestablishmentRequest message, an RRCConnectionReestablishmentComplete message, or a new RRC message that specifies the downlink signaling channel frequency for the LTE radio component.
9. The method of claim 1 , wherein the response message is received at a downlink signaling channel frequency that is displaced from an Industrial, Science and Medical (ISM) frequency band by at least a predetermined interference band.
10. The method of claim 1 , further comprising: if the response message is not received within the predetermined transition time period, declaring a radio link failure.
11. A user equipment device, comprising:
a first radio component and a second radio component on a shared platform, wherein the first radio component comprises a long term evolution (LTE) radio component;
at least one hardware processor;
a non-transitory computer-readable storage medium coupled to the at least one hardware processor and storing programming instructions for execution by the at least one hardware processor, wherein the programming instructions instruct the at least one hardware processor to:
detect, at the first radio component, in-device coexistence interference at a first channel frequency and unavailable channel frequencies;
send a coexistence interference indication message to a radio access network, wherein the coexistence interference indication message indicates the in-device coexistence interference and the unavailable channel frequencies; and
in response to a response message comprising one or more control parameters for establishing a second channel frequency for the first radio component being received within a predetermined transition time period, enable the first radio component to use the second channel frequency based on the one or more control parameters, wherein the response message is received at a downlink signaling channel frequency that is different from the first channel frequency.
12. The user equipment device of claim 11 , wherein the in-device coexistence interference is caused by the second radio component comprising a Global Navigation Satellite System (GNSS) component or a component operating in an Industrial, Science and Medical (ISM) frequency band.
13. The user equipment device of claim 11 , wherein detecting the in-device coexistence interference and the unavailable channel frequencies comprises receiving an internal message that the second radio component is enabled.
14. The user equipment device of claim 11 , wherein detecting the in-device coexistence interference and the unavailable channel frequencies comprises receiving an internal message identifying a transmission frequency band being used by a second radio component.
15. The user equipment device of claim 11 , wherein detecting the in-device coexistence interference and the unavailable channel frequencies comprises measuring at the first radio component in-device coexistence interference from the second radio component.
16. The user equipment device of claim 11 , wherein the response message is received at a downlink signaling channel frequency that is specified as a system parameter which defines a frequency band not experiencing in-device coexistence interference.
17. The user equipment device of claim 11 , wherein the response message is received at a downlink signaling channel frequency that is specified in a Radio Resource Control (RRC) message sent by the radio access network or as a system information block broadcast by the radio access network.
18. A non-transitory computer-readable medium storing instructions which, when executed by a hardware processor, cause a computing device to perform operations comprising:
detecting, at a long term evolution (LTE) radio component, in-device coexistence interference at a first channel frequency and unavailable channel frequencies;
sending a coexistence interference indication message to a radio access network, wherein the coexistence interference indication message indicates the in-device coexistence interference and the unavailable channel frequencies; and
in response to a response message comprising one or more control parameters for establishing a second channel frequency for the LTE radio component being received within a predetermined transition time period, enabling the LTE radio component to use the second channel frequency based on the one or more control parameters, wherein the response message is received at a downlink signaling channel frequency that is different from the first channel frequency.