# US 11,910,487 B2 · Method and apparatus for monitoring control information in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,487 B2 - Document ID: US11910487B2 - Status: Granted - Kind: B2 - Application number: 17/707,039 - Filed: 2022-03-29 - Published: 2022-07-07 - Granted: 2024-02-20 - Earliest claimed: 2019-04-03 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Taehyoung Kim; Jinkyu Kang; Youngbum Kim; Seunghoon Choi - Web page: https://patentgrep.com/patent/US11910487B2 ## CPC - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W 80/08: Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} - H04L 5/0092: {Indication of how the channel is divided} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Disclosed is a method performed by a terminal in a wireless communication system, including receiving, from a base station, at least one parameter for a search space, monitoring, on the search space, downlink control information (DCI) related with power saving, the search space being identified based on the at least one parameter, and the DCI including a wake up signal indicating whether to monitor a physical downlink control channel (PDCCH) and a bandwidth part (BWP) indication related with the wake up signal, and performing a PDCCH monitoring based on the wake up signal and the BWP indication included in the DCI. ## Claims ### Claim 1 A method performed by a terminal in a wireless communication system, the method comprising: receiving, from a base station, at least one parameter for a search space to monitor downlink control information (DCI) related with power saving; receiving the DCI related with the power saving, on a common search space identified based on the at least one parameter, by a radio network temporary identifier (RNTI) for the power saving, identifying a wake up indicator included in the received DCI related with the power saving; and performing a physical downlink control channel (PDCCH) monitoring based on a value of the wake up indicator. ### Claim 2 (depends on 1) The method of claim 1, further comprising identifying an offset indicating a time when the terminal starts monitoring the PDCCH for reception of the DCI related with the power saving. ### Claim 3 (depends on 1) The method of claim 1, wherein a cyclic redundancy check (CRC) of the DCI related with the power saving is scrambled by a radio network temporary identifier (RNTI) for the power saving. ### Claim 4 (depends on 1) The method of claim 1, wherein an indication for an active downlink bandwidth part is further included in the DCI related with the power saving. ### Claim 5 (depends on 1) The method of claim 1, wherein the PDCCH monitoring is performed on a configured period. ### Claim 6 A method performed by a base station in a wireless communication system, the method comprising: transmitting, to a terminal, at least one parameter for a search space to monitor downlink control information (DCI) related with power saving; and transmitting the DCI related with the power saving, on a common search space identified based on the at least one parameter, by a radio network temporary identifier (RNTI) for the power saving, wherein a wake up indicator included in the DCI related with the power saving is identified at the terminal, and wherein a physical downlink control channel (PDCCH) monitoring is performed at the terminal based on a value of the wake up indicator. ### Claim 7 (depends on 6) The method of claim 6, wherein an offset indicating a time when monitoring the PDCCH at the terminal for reception of the DCI related with the power saving is started is identified. ### Claim 8 (depends on 6) The method of claim 6, wherein a cyclic redundancy check (CRC) of the DCI related with the power saving is scrambled by a radio network temporary identifier (RNTI) for the power saving. ### Claim 9 (depends on 6) The method of claim 6, wherein an indication for an active downlink bandwidth part is further included in the DCI related with the power saving. ### Claim 10 (depends on 6) The method of claim 6, wherein the PDCCH monitoring is performed on a configured period. ### Claim 11 A terminal in a wireless communication system, the terminal comprising: a transceiver; and a processor coupled with the transceiver and configured to: receive, from a base station, at least one parameter for a search space to monitor downlink control information (DCI) related with power saving, receive the DCI related with the power saving, on a common search space identified based on the at least one parameter, by a radio network temporary identifier (RNTI) for the power saving, identify a wake up indicator included in the received DCI related with the power saving, and perform a physical downlink control channel (PDCCH) monitoring based on a value of the wake up indicator. ### Claim 12 (depends on 11) The terminal of claim 11, wherein the processor is further configured to identify an offset indicating a time when the terminal starts monitoring the PDCCH for reception of the DCI related with the power saving. ### Claim 13 (depends on 11) The terminal of claim 11, wherein a cyclic redundancy check (CRC) of the DCI related with the power saving is scrambled by a radio network temporary identifier (RNTI) for the power saving. ### Claim 14 (depends on 11) The terminal of claim 11, wherein an indication for an active downlink bandwidth part is further included in the DCI related with the power saving. ### Claim 15 (depends on 11) The terminal of claim 11, wherein the PDCCH monitoring is performed on a configured period. ### Claim 16 A base station in a wireless communication system, the base station comprising: a transceiver; and a processor coupled with the transceiver and configured to: transmit, to a terminal, at least one parameter for a search space to monitor downlink control information (DCI) related with power saving, and transmit the DCI related with the power saving, on a common search space identified based on the at least one parameter, by a radio network temporary identifier (RNTI) for the power saving, wherein a wake up indicator included in the DCI related with the power saving is identified at the terminal, and wherein a physical downlink control channel (PDCCH) monitoring is performed at the terminal based on a value of the wake up indicator. ### Claim 17 (depends on 16) The base station of claim 16, wherein an offset indicating a time when monitoring the PDCCH at the terminal for reception of the DCI related with the power saving is started is identified. ### Claim 18 (depends on 16) The base station of claim 16, wherein a cyclic redundancy check (CRC) of the DCI related with the power saving is scrambled by a radio network temporary identifier (RNTI) for the power saving. ### Claim 19 (depends on 16) The base station of claim 16, wherein an indication for an active downlink bandwidth part is further included in the DCI related with the power saving. ### Claim 20 (depends on 16) The base station of claim 16, wherein the PDCCH monitoring is performed on a configured period.