Method for allocating resource by considering inter-device interference in full-duplex wireless communication system and apparatus therefor
The present invention relates to a method and apparatus for allocating a resource by a base station in a wireless communication system supporting full-duplex communication. Specifically, the present invention comprises the steps of: transmitting, to a plurality of UEs, measurement information including time information and information on candidate sub-bands for measuring inter-device interference (IDI); receiving, from the plurality of UEs, IDI measurement results measured according to the measurement information; and performing resource allocation for the plurality of UEs on the basis of the IDI measurement results, wherein the information on candidate sub-bands includes at least one candidate sub-band configured for each of the plurality of UEs on the basis of channel measurement between the base station and the corresponding UE.
1. A method for allocating resources by a base station (BS) in a wireless communication system supporting full-duplex radio (FDR), the method comprising:
transmitting measurement information to a plurality of user equipments (UEs),
wherein the measurement information includes information on candidate sub-bands and time for measurement of inter-device interference (IDI) between the plurality of UEs,
wherein the candidate sub-bands are selected based on channel measurement between the BS and each of the plurality of UEs, and
wherein the information on time for measurement of IDI is determined based on a number of UEs for transmitting an IDI measurement signal on each of the candidate sub-bands and transmit power capability of each of the plurality of UEs on each of the candidate sub-bands;
receiving IDI measurement results measured based on the measurement information from the plurality of UEs; and
performing resource allocation for the plurality of UEs based on the IDI measurement results.
2. The method of claim 1 , wherein the measurement information is transmitted through one of a downlink control channel, a downlink data channel, and a higher layer signaling.
3. The method of claim 1 , wherein the information on time for measurement of IDI includes time offset information for transmission of the IDI measurement signals for the candidate sub-bands configured for each of the plurality of UEs.
4. The method of claim 3 , wherein the time offset information is used to determine unit times of the candidate sub-bands based on a number of measuring UEs accumulated before measurement of IDI for the candidate sub-bands.
5. The method of claim 1 , wherein the measurement information further includes information on an average number of UEs configured to measure IDI for the candidate sub-bands and offset information on a number of measuring UEs for each of the candidate sub-bands.
6. The method of claim 1 , wherein the measurement information further includes information for moving a starting point of an IDI measurement unit time configured for each of the candidate sub-bands.
7. The method of claim 6 , wherein the information for moving the starting point is represented as a unit time in which a first unit time configured for a candidate sub-band where measurement is ended and a second unit time configured for a candidate sub-band where measurement is initiated overlap each other.
8. The method of claim 1 , further comprising transmitting an IDI reference value, wherein only when the IDI measurement results are equal to or greater than the IDI reference value, the IDI measurement results are configured to be fed back.
9. The method of claim 1 , wherein the IDI measurement results are transmitted using channel reciprocity.
10. A base station for performing resource allocation in a wireless communication system supporting full-duplex radio (FDR), the BS comprising:
a radio frequency transceiver; and
a processor,
wherein the processor is configured to:
transmit measurement information to a plurality of user equipments (UEs),
wherein the measurement information includes information on candidate sub-bands and time for measurement of inter-device interference (IDI) between the plurality of UEs,
wherein the candidate sub-bands are selected based on channel measurement between the BS and each of the plurality of UEs, and
wherein the information on time for measurement of IDI is determined based on a number of UEs for transmitting an IDI measurement signal on each of the candidate sub-bands and transmit power capability of each of the plurality of UEs on each of the candidate sub-bands;
receive IDI measurement results measured according to the measurement information from the plurality of UEs; and
perform resource allocation for the plurality of UEs based on the IDI measurement results.