Communication node for scheduling and interference control in wireless communication network, and operation method therefor

Abstract

An operation method of a base station in an IFD scheme may comprise receiving position information of each of a plurality of downlink (DL) terminals and a plurality of uplink (UL) terminals; determining a guard zone corresponding to each of the plurality of DL terminals based on the position information of each of the plurality of DL terminals; determining whether at least one UL terminal is located in the guard zone based on the position information of each of the plurality of UL terminals; determining a scheduling priority of each of the plurality of DL terminals according to whether at least one UL terminal is located in the guard zone; generating DL control information including frequency-time resource allocation information and interference control information based on the determined scheduling priority; and transmitting data signals and the DL control information to the plurality of DL terminals.

What is claimed is: 
     
         1 . An operation method of a base station in an in-band full duplex (IFD) scheme, the operation method comprising:
 receiving position information of each of a plurality of downlink (DL) terminals and a plurality of uplink (UL) terminals;   determining a guard zone corresponding to each of the plurality of DL terminals based on the position information of each of the plurality of DL terminals;   determining whether at least one UL terminal is located in the guard zone based on the position information of each of the plurality of UL terminals;   determining a scheduling priority of each of the plurality of DL terminals according to whether at least one UL terminal is located in the guard zone;   generating DL control information including frequency-time resource allocation information and interference control information based on the determined scheduling priority; and   transmitting data signals and the DL control information to the plurality of DL terminals.   
     
     
         2 . The operation method according to  claim 1 , wherein the determining a scheduling priority further comprises:
 when a first UL terminal is located in a first guard zone in which a first DL terminal is centered, generating first frequency-time resource allocation information for allocating a resource to the first DL terminal and the first DL terminal;   generating first pairing information indicating that the first DL terminal and the first UL terminal use a same frequency-time resource; and   generating first interference control information instructing interference cancellation.   
     
     
         3 . The operation method according to  claim 2 , wherein the generating DL control information further comprises generating first DL control information including the first frequency-time resource allocation information, the first paring information, and the first interference control information, and the transmitting data signals and the DL control information further comprises transmitting a first data signal and the first DL control information to the first DL terminal. 
     
     
         4 . The operation method according to  claim 1 , wherein the determining a scheduling priority further comprises, when a second UL terminal and a third UL terminal are located in a second guard zone in which a second DL terminal is centered, determining a UL terminal using a same frequency-time resource with the second DL terminal based on position information of the second UL terminal and the third UL terminal. 
     
     
         5 . The operation method according to  claim 4 , wherein the determining a scheduling priority further comprises, when a distance between the second DL terminal and the second UL terminal is smaller than a distance between the second DL terminal and the third UL terminal, determining the second UL terminal as a UL terminal using a same frequency-time resource with the second DL terminal. 
     
     
         6 . The operation method according to  claim 5 , wherein the determining a scheduling priority further comprises:
 generating second frequency-time resource allocation information for allocating a resource to the second DL terminal and the second UL terminal;   generating second pairing information indicating that the second DL terminal and the second UL terminal use a same frequency-time resource; and   generating second interference control information instructing interference cancellation.   
     
     
         7 . The operation method according to  claim 6 , wherein the generating DL control information further comprises generating second DL control information including the second frequency-time resource allocation information, the second paring information, and the second interference control information, and the transmitting data signals and the DL control information further comprises transmitting a second data signal and the second DL control information to the second DL terminal. 
     
     
         8 . The operation method according to  claim 4 , wherein the determining a scheduling priority further comprises, when a UL terminal is not located in a third guard zone in which the third DL terminal is centered, determining a UL terminal using a same frequency-time resource with the third DL terminal based on position information of the third UL terminal and position information of a fourth UL terminal which is not located in the third guard zone. 
     
     
         9 . The operation method according to  claim 8 , wherein the determining a scheduling priority further comprises, when a distance between the third DL terminal and the third UL terminal is larger than a distance between the third DL terminal and the fourth UL terminal, determining the third UL terminal as a UL terminal using a same frequency-time resource with the third DL terminal. 
     
     
         10 . The operation method according to  claim 9 , wherein the determining a scheduling priority further comprises:
 generating third frequency-time resource allocation information for allocating a resource to the third DL terminal and the third UL terminal;   generating third pairing information indicating that the third DL terminal and the third UL terminal use a same frequency-time resource; and   generating third interference control information instructing interference cancellation,   wherein the generating DL control information further comprises generating third DL control information including the third frequency-time resource allocation information, the third paring information, and the third interference control information, and the transmitting data signals and the DL control information further comprises transmitting a third data signal and the third DL control information to the third DL terminal.   
     
     
         11 . An operation method of a terminal receiving data signal from a base station operating in an in-band full duplex (IFD) scheme, the operation method comprising:
 transmitting position information of the terminal to the base station;   receiving, from the base station, frequency-time resource allocation information, pairing information, and interference control information; and   determining whether to perform an interference cancellation operation based on the interference control information.   
     
     
         12 . The operation method according to  claim 11 , wherein the frequency-time resource allocation information includes information on a frequency-time resource allocated to the terminal, the pairing information includes identification information of another terminal using a same frequency-time resource with the terminal, and the interference control information includes information instructing whether to perform an interference cancellation operation when the data signal is received. 
     
     
         13 . The operation method according to  claim 12 , wherein the interference control information is generated based on the position information of the terminal and the another terminal, includes information instructing to perform the interference cancellation operation when a distance between the terminal and the another terminal is less than a threshold, and includes information instructing not to perform the interference cancellation operation when the distance between the terminal and the another terminal exceeds a threshold. 
     
     
         14 . The operation method according to  claim 12 , wherein the determining further comprises receiving the data signal by performing the interference cancellation operation when the interference control information includes information instructing to perform the interference cancellation operation. 
     
     
         15 . The operation method according to  claim 12 , wherein the determining further comprises receiving the data signal without performing the interference cancellation operation when the interference control information includes information instructing not to perform the interference cancellation operation. 
     
     
         16 . A terminal receiving data signal from a base station operating in an in-band full duplex (IFD) manner, the terminal comprising a processor and a memory storing at least one instruction executed by the processor, wherein the at least one instruction is configured to:
 transmit position information of the terminal to the base station;   receive, from the base station, frequency-time resource allocation information, pairing information, and interference control information; and   determine whether to perform an interference cancellation operation based on the interference control information.   
     
     
         17 . The terminal according to  claim 16 , wherein the frequency-time resource allocation information includes information on a frequency-time resource allocated to the terminal, the pairing information includes identification information of another terminal using a same frequency-time resource with the terminal, and the interference control information includes information instructing whether to perform an interference cancellation operation when the data signal is received. 
     
     
         18 . The terminal according to  claim 17 , wherein the interference control information is generated based on the position information of the terminal and the another terminal, includes information instructing to perform the interference cancellation operation when a distance between the terminal and the another terminal is less than a threshold, and includes information instructing not to perform the interference cancellation operation when the distance between the terminal and the another terminal exceeds a threshold. 
     
     
         19 . The terminal according to  claim 17 , wherein the at least one instruction is further configured to receive the data signal by performing the interference cancellation operation when the interference control information includes information instructing to perform the interference cancellation operation. 
     
     
         20 . The terminal according to  claim 17 , wherein the at least one instruction is further configured to receive the data signal without performing the interference cancellation operation when the interference control information includes information instructing not to perform the interference cancellation operation.