Apparatus and method for managing interference in wireless communication system
An apparatus of a base station in a wireless communication system supporting time division duplex (TDD) and a method thereof are provided. The apparatus includes at least one transceiver, and at least one processor operatively connected with the at least one transceiver. The at least one processor may be configured to perform signaling for preventing transmission of an uplink (UL) signal in a cell, and measure a strength of a downlink (DL) signal received from at least one base station during at least one symbol in a UL subframe. The apparatus relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE).
1. A method performed by an aggressor base station in a wireless communication system supporting time division duplex (TDD), the method comprising:
configuring downlink (DL) and uplink (UL) patterns, the downlink and uplink patterns sequentially comprising a DL period, a guard period (GP) between the DL period and a UL period, and the UL period;
transmitting, to a victim base station, a DL signal; and
receiving, from the victim base station, a notification signal indicating that remote interference occurs by the DL signal transmitted from the aggressor base station,
wherein the notification signal is transmitted by the victim base station based on a measurement result,
wherein the measurement result is obtained by the victim base station based on the DL signal of the aggressor base station configured with the DL pattern and the UL pattern, during at least one symbol period of the UL period, and
wherein the DL signal is configured to be transmitted in the DL period of the DL and UL patterns in the aggressor base station.
2. The method of claim 1 , further comprising:
transmitting a result of the notification signal to the victim base station,
wherein the result of the notification signal is transmitted via a backhaul between the victim base station and the aggressor base station.
3. The method of claim 1 , wherein the DL signal comprises dummy data generated to enable measurement of the remote interference.
4. The method of claim 3 , wherein the dummy data is generated according to a size of a load determined based on a resource usage of the aggressor base station.
5. The method of claim 3 , wherein the dummy data is generated according to a predetermined size of a load.
6. The method of claim 1 , wherein the notification signal comprises information on a number of UL symbols related to the remote interference.
7. The method of claim 6 , wherein the number of UL symbols related to the remote interference is based on a distance between the victim base station and the aggressor base station.
8. An aggressor base station in a wireless communication system supporting time division duplex (TDD), the aggressor base station comprising:
at least one transceiver; and
at least one processor operatively coupled to the at least one transceiver,
wherein the at least one processor is configured to cause the aggressor base station to:
configure downlink (DL) and uplink (UL) patterns, the downlink and uplink patterns sequentially comprising a DL period, a guard period (GP) between the DL period and a UL period, and the UL period,
transmit, to a victim base station, a DL signal, and
receive, from the victim base station, a notification signal indicating that remote interference occurs by the DL signal transmitted from the aggressor base station,
wherein the notification signal is transmitted by the victim base station based on a measurement result,
wherein the measurement result is obtained by the victim base station based on the DL signal of the aggressor base station configured with the DL pattern and the UL pattern, during at least one symbol period of the UL period, and
wherein the DL signal is configured to be transmitted in the DL period of the DL and UL patterns in the aggressor base station.
9. The aggressor base station of claim 8 ,
wherein the at least one processor is further configured to:
transmit a result of the notification signal to the victim base station, and
wherein the result of the notification signal is transmitted via a backhaul between the victim base station and the aggressor base station.
10. The aggressor base station of claim 8 , wherein the DL signal comprises dummy data generated to enable measurement of the remote interference.
11. The aggressor base station of claim 10 , wherein the dummy data is generated according to a size of a load determined based on a resource usage of the aggressor base station.
12. The aggressor base station of claim 10 , wherein the dummy data is generated according to a predetermined size of a load.
13. The aggressor base station of claim 8 , wherein the notification signal comprises information on a number of UL symbols related to the remote interference.
14. The aggressor base station of claim 13 , wherein the number of UL symbols related to the remote interference is based on a distance between the victim base station and the aggressor base station.