Method and apparatus for downlink communication in communication system

Abstract

An operation method of a terminal in a communication system may comprise receiving, from a base station, first information indication suspension of a physical downlink control channel (PDCCH) monitoring operation; in response to the first information, suspending the PDCCH monitoring operation in a first period; and restarting the PDCCH monitoring operation after the first period ends.

What is claimed is: 
     
         1 . An operation method of a terminal in a communication system, the operation method comprising:
 receiving, from a base station, first information indication suspension of a physical downlink control channel (PDCCH) monitoring operation;   in response to the first information, suspending the PDCCH monitoring operation in a first period; and   restarting the PDCCH monitoring operation after the first period ends.   
     
     
         2 . The operation method according to  claim 1 , further comprising receiving configuration information for controlling the PDCCH monitoring operation from the base station, wherein the first period is indicated by the configuration information. 
     
     
         3 . The operation method according to  claim 2 , wherein the configuration information includes one or more of a start time of the first period, a duration of the first period, an end time of the first period, a restart time of the PDCCH monitoring operation, information of a signaling occasion in which the first information is transmitted and received, information of a control resource set (CORESET) in which the first information is transmitted and received, and information of a search space in which the first information is transmitted and received. 
     
     
         4 . The operation method according to  claim 3 , wherein the duration of the first period is a multiple of a periodicity of the signaling occasion. 
     
     
         5 . The operation method according to  claim 1 , wherein the first information is received through one or more of a radio resource control (RRC) message, a medium access control (MAC) message, and a physical (PHY) message. 
     
     
         6 . The operation method according to  claim 1 , wherein the first information is received using a radio network temporary identifier (RNTI) configured for transmission and reception of the first information. 
     
     
         7 . The operation method according to  claim 6 , wherein the RNTI is a terminal-specific RNTI allocated for the terminal or a common RNTI allocated for a group including the terminal, and a cyclic redundancy check (CRC) of downlink control information (DCI) including the first information is scrambled by the RNTI. 
     
     
         8 . An operation method of a terminal in a communication system, the operation method comprising:
 receiving, from a base station, first information indication execution of a physical downlink control channel (PDCCH) monitoring operation;   in response to the first information, performing the PDCCH monitoring operation in a first period; and   suspending the PDCCH monitoring operation after the first period ends.   
     
     
         9 . The operation method according to  claim 8 , further comprising receiving configuration information for controlling the PDCCH monitoring operation from the base station, wherein the first period is indicated by the configuration information. 
     
     
         10 . The operation method according to  claim 9 , wherein the configuration information includes one or more of a transmission time of the first information, an offset between the transmission time of the first information and the first period, a start time of the first period, a duration of the first period, an end time of the first period, information of a signaling occasion in which the first information is transmitted and received, information of a control resource set (CORESET) in which the first information is transmitted and received, and information of a search space in which the first information is transmitted and received. 
     
     
         11 . The operation method according to  claim 8 , wherein the first information is received through one or more of a radio resource control (RRC) message, a medium access control (MAC) message, and a physical (PHY) message. 
     
     
         12 . The operation method according to  claim 8 , wherein the first information is received using a radio network temporary identifier (RNTI) configured for transmission and reception of the first information. 
     
     
         13 . The operation method according to  claim 12 , wherein the RNTI is a terminal-specific RNTI allocated for the terminal or a common RNTI allocated for a group including the terminal, and a cyclic redundancy check (CRC) of downlink control information (DCI) including the first information is scrambled by the RNTI. 
     
     
         14 . The operation method according to  claim 8 , wherein the first information is received before an offset from a start time of the first period or in the first period, and the PDCCH monitoring operation is performed to receive a paging message. 
     
     
         15 . The operation method according to  claim 8 , wherein the first information indicates execution of the PDCCH monitoring operation for reception of a paging message, and the first information is received according to a signaling occasion periodicity. 
     
     
         16 . An operation method of a base station in a communication system, the operation method comprising:
 generating configuration information for controlling a physical downlink control channel (PDCCH) monitoring operation;   transmitting a radio resource control (RRC) message including the configuration information to a terminal; and   transmitting first information indicating of a control of the PDCCH monitoring operation to the terminal.   
     
     
         17 . The operation method according to  claim 16 , wherein the first information indicates suspension or execution of the PDCCH monitoring operation. 
     
     
         18 . The operation method according to  claim 16 , wherein the first information is transmitted using a radio network temporary identifier (RNTI) configured for transmission and reception of the first information, and the RNTI is a terminal-specific RNTI allocated for the terminal or a common RNTI allocated for a group including the terminal. 
     
     
         19 . The operation method according to  claim 16 , wherein the first information is transmitted before an offset from a start time of an execution period of the PDCCH monitoring operation or in the execution period of the PDCCH monitoring operation, and the PDCCH monitoring operation is performed by the terminal to receive a paging message. 
     
     
         20 . The operation method according to  claim 16 , wherein the configuration information includes one or more of a start time of an execution period of the PDCCH monitoring operation, a duration of the execution period, an end time of the execution period, a restart time of the PDCCH monitoring operation, a transmission time of the first information, an offset between the first information and the execution period, information of a signaling occasion in which the first information is transmitted and received, information of a control resource set (CORESET) in which the first information is transmitted and received, and information of a search space in which the first information is transmitted and received.