# US 2020/0288463 A1 · Method for indicating preemption in communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288463 A1 - Document ID: US20200288463A1 - Status: Published application - Kind: A1 - Application number: 16/644,721 - Filed: 2018-09-12 - Published: 2020-09-10 - Earliest claimed: 2017-09-29 - Assignees: Electronics and Telecommunications Research Institute - Applicants: Electronics and Telecommunications Research Institute - Inventors: Jung Hoon LEE; Jung Bin KIM; Cheul Soon KIM; Sung Hyun MOON; CHOONG IL YEH - Web page: https://patentgrep.com/patent/US20200288463A1 ## CPC - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 76/36: for reassigning the resources associated with the released connections - H04B 17/382: for resource allocation, admission control or handover - H04L 1/16: in which the return channel carries supervisory signals, e.g. repetition request signals - H04L 5/00: Arrangements affording multiple use of the transmission path - H04L 5/0035: {Resource allocation in a cooperative multipoint environment} - H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence) - H04W 28/00: Network traffic management; Network resource management - H04W 72/04: Wireless resource allocation - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/231: the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling - H04W 72/232: the control data signalling from the physical layer, e.g. DCI signalling - H04W 72/569: {of the traffic information} - H04W 76/20: Manipulation of established connections - H04W 76/27: Transitions between radio resource control [RRC] states - H04L 27/2666: {Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length} - H04L 47/78: Architectures of resource allocation - H04L 47/822: {Collecting or measuring resource availability data} - H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method for indicating preemption in a communication system is disclosed. A method for operating a terminal comprises the steps of: receiving, from a base station, information indicating a first resource area, to which a preemption-capable resource belongs, for transmission of first data; receiving resource allocation information of second data from the base station; performing a monitoring operation for detecting a PI indicating a preempted resource for transmission of the first data in the first resource area, when the first resource area overlaps with a second resource area indicated by the resource allocation information; and performing decoding on the basis of the detected PI. Therefore, the performance of the communication system may be improved. ## Claims ### Claim 1 An operation method of a terminal in a communication system, the operation method comprising: receiving from a base station information indicating a first resource region to which resources allowed to be preempted for transmission of a first data belong; receiving from the base station resource allocation information of a second data; when the first resource region overlaps with a second resource region indicated by the resource allocation information, performing a monitoring operation for detecting a preemption indication (PI) indicating a resource preempted for transmission of the first data in the first resource region; and in response to detecting the PI, performing decoding on the second data obtained through resources other than the preempted resource indicated by the PI in the second resource region. ### Claim 2 (depends on 1) The operation method according to claim 1, wherein the PI includes a bitmap indicating the preempted resource in one slot, the one slot is divided into N sub resource blocks, the bitmap includes N bits each of which indicates whether each of the N sub resource blocks is the preempted resource, and N is an integer equal to or greater than 2. ### Claim 3 (depends on 2) The operation method according to claim 2, wherein, when the one slot includes 14 symbols, a configuration unit of each of the N sub resource blocks in time axis is 1 symbol, 2 symbols, 4 symbols, or 7 symbols, and the PI further includes information indicating the configuration unit. ### Claim 4 (depends on 1) The operation method according to claim 1, wherein the PI includes a bitmap indicating the preempted resource within M slots, each of the M slots is divided into N sub resource blocks, the bitmap includes N×M bits each of which indicates whether each of the N sub resource blocks is the preempted resource in each of the M slots, and each of N and M is an integer equal to or greater than 2. ### Claim 5 (depends on 4) The operation method according to claim 4, wherein the PI further includes information indicating whether the preempted resource exist in each of the M slots. ### Claim 6 (depends on 1) The operation method according to claim 1, wherein the PI includes a bitmap indicating the preempted resource within M slots, each of the M slots is divided into N sub resource blocks, the bitmap is expressed as a sum of M sub-bitmaps each of which indicates each of the N sub resource blocks is the preempted resource in each of the M slots, each of the M sub-bitmaps includes N bits each of which indicates whether each of the N sub resource blocks is the preempted resource, and each of N and M is an integer equal to or greater than 2. ### Claim 7 (depends on 1) The operation method according to claim 1, wherein the information indicating the first resource region is received through a synchronization signal/physical broadcast channel (SS/PBCH) block or a radio resource control (RRC) message. ### Claim 8 (depends on 1) The operation method according to claim 1, wherein the first resource region is a frequency band comprising one or more physical resource blocks (PRBs) or one or more bandwidth parts (BWPs). ### Claim 9 (depends on 1) The operation method according to claim 1, wherein the monitoring operation is performed according to a preconfigured monitoring period, and information indicating the preconfigured monitoring period is received from the base station. ### Claim 10 (depends on 1) The operation method according to claim 1, wherein, when a first subcarrier spacing of the preempted resource is different from a second subcarrier spacing of a resource in which the PI is detected, a time region of the preempted resource is determined based on a ratio of the first subcarrier spacing and the second subcarrier spacing. ### Claim 11 An operation method of a terminal in a communication system, the operation method comprising: receiving from a base station information indicating a first resource region to which resources allowed to be preempted for transmission of a first data belong; receiving from the base station a preemption resource (PR) indicating a pattern of the resources allowed to be preempted in the first resource region; receiving from the base station resource allocation information of a second data; when the first resource region overlaps with a second resource region indicated by the resource allocation information, performing a monitoring operation for detecting a preemption indication (PI) indicating whether a resource preempted for transmission of the first data is present in the first resource region; and when the PI is detected and the PI indicates that the preempted resource is present in the first resource region, performing decoding on the second data obtained through resources other than resources according to the pattern indicated by the PR in the second resource region. ### Claim 12 (depends on 11) The operation method according to claim 11, wherein the PI includes a bitmap indicating the preempted resource in one slot, the one slot is divided into N sub resource blocks, the bitmap includes N bits each of which indicates whether each of the N sub resource blocks is the preempted resource, and N is an integer equal to or greater than 2. ### Claim 13 (depends on 12) The operation method according to claim 12, wherein, when the one slot includes 14 symbols, a configuration unit of each of the N sub resource blocks in time axis is 1 symbol, 2 symbols, 4 symbols, or 7 symbols, and the PI further includes information indicating the configuration unit. ### Claim 14 (depends on 11) The operation method according to claim 11, wherein the PI further includes information indicating a number of slots to which the PI is applied. ### Claim 15 (depends on 11) The operation method according to claim 11, wherein the information indicating the first resource region is received through a synchronization signal/physical broadcast channel (SS/PBCH) block or a radio resource control (RRC) message. ### Claim 16 An operation method of a base station in a communication system, the operation method comprising: transmitting information indicating a first resource region to which resources allowed to be preempted for transmission of a first data belong; transmitting resource allocation information of a second data to a terminal; transmitting the second data to the terminal using a second resource region indicated by the resource allocation information, when the first resource region overlaps with the second resource region indicated by the resource allocation information and transmission of the first data is required, transmitting the first data using the resources allowed to be preempted in the first resource region; and transmitting to the terminal a preemption indication (PI) indicating a preempted resource for the transmission of the first data in the first resource region. ### Claim 17 (depends on 16) The operation method according to claim 16, wherein the PI includes a bitmap indicating the preempted resource in one slot, the one slot is divided into N sub resource blocks, the bitmap includes N bits each of which indicates whether each of the N sub resource blocks is the preempted resource, and N is an integer equal to or greater than 2. ### Claim 18 (depends on 17) The operation method according to claim 17, wherein, when the one slot includes 14 symbols, a configuration unit of each of the N sub resource blocks in time axis is 1 symbol, 2 symbols, 4 symbols, or 7 symbols, and the PI further includes information indicating the configuration unit. ### Claim 19 (depends on 16) The operation method according to claim 16, wherein the PI includes a bitmap indicating the preempted resource within M slots, each of the M slots is divided into N sub resource blocks, the bitmap includes N×M bits each of which indicates whether each of the N sub resource blocks is the preempted resource in each of the M slots, and each of N and M is an integer equal to or greater than 2. ### Claim 20 (depends on 16) The operation method according to claim 16, wherein the PI includes a bitmap indicating the preempted resource within M slots, each of the M slots is divided into N sub resource blocks, the bitmap is expressed as a sum of M sub-bitmaps each of which indicates each of the N sub resource blocks is the preempted resource in each of the M slots, each of the M sub-bitmaps includes N bits each of which indicates whether each of the N sub resource blocks is the preempted resource, and each of N and M is an integer equal to or greater than 2.