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 a first base station in a wireless communication system supporting time division duplex (TDD), the method comprising:
configuring a first configuration including uplink (UL)-downlink (DL) patterns, wherein the UL-DL patterns sequentially comprise a DL period, a guard period (GP) between the DL period and a UL period, and the UL period; and
receiving, from a second base station, a notification signal indicating that remote interference occurs in the UL period by a DL signal transmitted from the first base station in the DL period,
wherein the notification signal is provided based on a measurement result obtained by the second base station during at least one symbol period of the UL period.
2 . The method of claim 1 , further comprising:
transmitting a signal based on a result of the notification via a backhaul between the first base station and the second base station.
3 . The method of claim 1 ,
wherein the first base station is associated with an aggressor cell, and the second base station is associated with a victim cell, and
wherein the second base station is configured with a second configuration including the same UL-DL patterns as the UL-DL patterns included in the first configuration of the first base station.
4 . The method of claim 1 , wherein a number of UL symbols associated with the remote interference is based on a distance between the first base station and the second base station.
5 . A method performed by a second base station in a wireless communication system supporting time division duplex (TDD), the method comprising:
configuring a first configuration including uplink (UL)-downlink (DL) patterns, wherein the UL-DL patterns sequentially comprise a DL period, a guard period (GP) between the DL period and a UL period, and the UL period;
obtaining a measurement result during at least one symbol period of the UL period; and
transmitting a notification signal indicating that remote interference occurs in the UL period by the DL signal transmitted from a first base station in the DL period,
wherein the notification signal is provided based on the measurement result.
6 . The method of claim 5 , wherein the first base station is associated with an aggressor cell, and the second base station is associated with a victim cell.
7 . The method of claim 5 , wherein the first base station is configured with a second configuration including the same UL-DL patterns as the UL-DL patterns included in the first configuration of the second base station.
8 . The method of claim 5 , wherein a number of UL symbols associated with the remote interference is based on a distance between the first base station and the second base station.
9 . A first base station in a wireless communication system supporting time division duplex (TDD), the first base station comprising:
a transceiver; and
a processor coupled with the transceiver; and
memory storing instructions that, when executed by the processor, cause the first base station to:
configure a first configuration including uplink (UL)-downlink (DL) patterns, wherein the UL-DL patterns sequentially comprise a DL period, a guard period (GP) between the DL period and a UL period, and the UL period, and
receive, from a second base station, a notification signal indicating that remote interference occurs in the UL period by a DL signal transmitted from the first base station in the DL period,
wherein the notification signal is provided based on a measurement result obtained by the second base station during at least one symbol period of the UL period.
10 . The first base station of claim 9 , wherein the instructions, when executed by the processor, cause the first base station to transmit a signal based on a result of the notification via a backhaul between the first base station and the second base station.
11 . The first base station of claim 9 ,
wherein the first base station is associated with an aggressor cell, and the second base station is associated with a victim cell, and
wherein the second base station is configured with a second configuration including the same UL-DL patterns as the UL-DL patterns included in the first configuration of the first base station.
12 . The first base station of claim 9 , wherein a number of UL symbols associated with the remote interference is based on a distance between the first base station and the second base station.
13 . A second base station in a wireless communication system supporting time division duplex (TDD), the second base station comprising:
a transceiver; and
a processor coupled with the transceiver; and
memory storing instructions that, when executed by the processor, cause the second base station to:
configure a first configuration including uplink (UL)-downlink (DL) patterns, wherein the UL-DL patterns sequentially comprise a DL period, a guard period (GP) between the DL period and a UL period, and the UL period,
obtain a measurement result during at least one symbol period of the UL period, and
transmit a notification signal indicating that remote interference occurs in the UL period by the DL signal transmitted from the first base station in the DL period,
wherein the notification signal is provided based on the measurement result.
14 . The second base station of claim 13 , wherein the first base station is associated with an aggressor cell, and the second base station is associated with a victim cell.
15 . The second base station of claim 13 , wherein the first base station is configured with a second configuration including the same UL-DL patterns as the UL-DL patterns included in the first configuration of the second base station.
16 . The second base station of claim 13 , wherein a number of UL symbols related to the remote interference is based on a distance between the first base station and the second base station.
17 . One or more non-transitory computer-readable storage media storing one or more programs including instructions that, when executed by one or more processors of a first base station, cause the first base station to perform operations, the operations comprising:
configuring a first configuration including uplink (UL)-downlink (DL) patterns, wherein the UL-DL patterns sequentially comprise a DL period, a guard period (GP) between the DL period and a UL period, and the UL period; and
receiving, from a second base station, a notification signal indicating that remote interference occurs in the UL period by a DL signal transmitted from the first base station in the DL period,
wherein the notification signal is received, based on a measurement result obtained by the second base station during at least one symbol period of the UL period.
18 . The one or more non-transitory computer-readable recording media of claim 17 ,
wherein the second base station is configured with a second configuration including the same UL-DL patterns as the UL-DL patterns included in the first configuration of the first base station.
19 . One or more non-transitory computer-readable storage media storing one or more programs including instructions that, when executed by one or more processors of a second base station, cause the second base station to perform operations, the operations comprising:
configuring a first configuration including uplink (UL)-downlink (DL) patterns, wherein the UL-DL patterns sequentially comprise a DL period, a guard period (GP) between the DL period and a UL period, and the UL period;
obtaining a measurement result during at least one symbol period of the UL period; and
transmitting, to a first base station, a notification signal indicating that remote interference occurs in the UL period by the DL signal transmitted from the first base station in the DL period,
wherein the notification signal is transmitted based on the measurement result.
20 . The one or more non-transitory computer-readable storage media of claim 19 ,
wherein the first base station is configured with a second configuration including the same UL-DL patterns as the UL-DL patterns included in the first configuration of the second base station.