Apparatus and method for controlling coexistence interference within device in wireless communication system
View Patent ↗The present invention provides an apparatus and a method for controlling coexistence interference within a device in a wireless communication system. The method discloses the following steps: performing triggering, in which a transmission, which is generated in a terminal, in a first frequency band of a first network system requests controlling of interference on a reception, which is generated in the terminal, in a second frequency band of a second network system; transmitting to a base station support information including information on a time section that can or cannot be used by the first network system of the second network system, due to the interference; and receiving from the base station reply information for accepting or denying interference control as a reply to the support information.
1. A method for coordinating in device coexistence (IDC) interference by a user equipment, the method comprising:
triggering a first coordination of IDC interference on reception through a first frequency of a Long Term Evolution (LTE) frequency band;
transmitting, to an eNodeB (eNB), first assistance information for the first coordination, the first assistance information comprising information of the first frequency;
retriggering a second coordination of IDC interference after the first coordination is triggered, the second coordination being based on a Time Division Multiplexing (TDM) technique when a change of the first assistance information occurs;
transmitting, to the eNB, second assistance information for the second coordination; and
receiving, from the eNB, a response responsive to the second assistance information,
wherein the second assistance information comprises a bitmap for indicating an unusable subframe irrespective of uplink and downlink,
wherein a subframe is a usable subframe if a value of the bitmap corresponding to the subframe indicates ‘1’, and the subframe is an unusable subframe if the value of the bitmap corresponding to the subframe indicates ‘0’, and
wherein the response comprises information indicating whether the second assistance information is accepted or rejected.
2. The method of claim 1 , wherein the first and second assistance information is transmitted by being included in a radio resource control (RRC) message.
3. The method of claim 1 , wherein the interference is caused by a transmission through a second frequency, being different from the first frequency.
4. A method for coordinating in device coexistence (IDC) interference by an eNodeB (eNB), the method comprising:
receiving, from a user equipment (UE), first assistance information regarding a first coordination of IDC interference on reception through a first frequency of a Long Term Evolution (LTE) frequency band, the first assistance information comprising information of the first frequency;
receiving, from the UE, second assistance information regarding a second coordination of the interference, the second coordination being based on a Time Division Multiplexing (TDM) technique when a change of the first assistance information occurs; and
transmitting, to the UE, a response responsive to the second assistance information,
wherein the second coordination is triggered at the UE after the first coordination is triggered,
wherein the second assistance information comprises a bitmap for indicating an unusable subframe irrespective of uplink and downlink,
wherein a subframe is a usable subframe if a value of the bitmap corresponding to the subframe indicates ‘1’, and the subframe is an unusable subframe if the value of the bitmap corresponding to the subframe indicates ‘0’, and
wherein the response comprises information indicating whether the second assistance information is accepted or rejected.
5. The method of claim 4 , wherein the first and second assistance information is received by being included in a radio resource control (RRC) message.
6. The method of claim 4 , wherein the interference is caused by a transmission through a second frequency, being different from the first frequency.
7. The method of claim 1 , wherein the first assistance information comprises a request for Frequency Division Multipelxing (FDM) based IDC coordination.
8. The method of claim 4 , wherein the first assistance information comprises a request for Frequency Division Multipelxing (FDM) based IDC coordination.
9. A user equipment (UE) to support in device coexistence (IDC) interference coordination, the UE comprising:
a processor configured to trigger a first coordination of IDC interference on reception through a first frequency of a Long Term Evolution (LTE) frequency band; and
a wireless transceiver to transmit, to an eNodeB (eNB), first assistance information for the first coordination, the first assistance information comprising information of the first frequency,
wherein the processor is configured to retrigger a second coordination of IDC interference after the first coordination is triggered, the second coordination being based on a Time Division Multiplexing (TDM) technique when a change of the first assistance information occurs,
wherein the wireless transceiver transmits, to the eNB, second assistance information for the second coordination, and receives, from the eNB, a response responsive to the second assistance information,
wherein the second assistance information comprises a bitmap for indicating an unusable subframe irrespective of uplink and downlink,
wherein a subframe is a usable subframe if a value of the bitmap corresponding to the subframe indicates ‘1’, and the subframe is an unusable subframe if the value of the bitmap corresponding to the subframe indicates ‘0’, and
wherein the response comprises information indicating whether the second assistance information is accepted or rejected.
10. The UE of claim 9 , wherein the first and second assistance information is transmitted by being included in a radio resource control (RRC) message.
11. The UE of claim 9 , wherein the interference is caused by a transmission through a second frequency, being different from the first frequency.
12. The UE of claim 9 , wherein the first assistance information comprises a request for Frequency Division Multipelxing (FDM) based IDC coordination.