# US 11,310,820 B2 · Cross-carrier scheduling method and device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,820 B2 - Document ID: US11310820B2 - Status: Granted - Kind: B2 - Application number: 16/636,880 - Filed: 2017-08-11 - Published: 2020-11-26 - Granted: 2022-04-19 - Earliest claimed: 2017-08-11 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Yajun Zhu - Web page: https://patentgrep.com/patent/US11310820B2 ## CPC - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/20: Control channels or signalling for resource management - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Provided in the present disclosure are a cross-carrier scheduling method and device, wherein the method comprises: sending scheduling information to a terminal, the scheduling information being used for cross-carrier scheduling a target bandwidth part on at least one target carrier by means of a scheduling carrier, wherein the target carrier is a carrier that is scheduled by the scheduling carrier and that is configured with at least one bandwidth part, the bandwidth part is a frequency domain resource pre-designated on a carrier, and the target bandwidth part is a bandwidth part that is scheduled by the scheduling carrier among all bandwidth parts on the target carrier. According to the present disclosure, a target bandwidth part on at least one target carrier may be scheduled by a scheduling carrier, and the target carrier configured with the at least one bandwidth part may be scheduled across bandwidth parts at the same time that cross-carrier scheduling is implemented, thereby achieving a more flexible scheduling mode. In addition, at the same time that cross-bandwidth part scheduling is implemented, resources of different bandwidth parts on a carrier may be fully utilized, thereby reducing the blocking probability of a control signaling. ## Claims ### Claim 1 A cross-carrier scheduling method for a base station, the method comprising: sending scheduling information to a terminal, for cross-carrier scheduling a target bandwidth part on at least one target carrier by means of a scheduling carrier; wherein the target carrier is scheduled by the scheduling carrier and configured with at least one bandwidth part, the at least one bandwidth part is a frequency domain resource pre-designated on the scheduling carrier; and the target bandwidth part is scheduled by the scheduling carrier among all bandwidth parts on the target carrier; wherein physical resource blocks (PRBs) on each carrier configured for the terminal are separately numbered in a predefined order, bandwidth parts on each carrier are independently numbered in units of PRBs in a predefined order, and the scheduling information comprises: association information; and PRB indication information for indicating a scheduled PRB; wherein the association information is information associated with carrier indication information and bandwidth part indication information, the carrier indication information indicates a scheduled carrier, and the bandwidth part indication information indicates a scheduled bandwidth part on the scheduled carrier, wherein the association information is a scrambling sequence for scrambling physical broadcast channel (PBCH) or synchronization signal (SS) block; wherein the association information is predefined or configured by the base station for the terminal, and when the association information is configured by the base station for the terminal, the method further comprises: sending the association information to the terminal by target signaling, wherein the target signaling comprises any one of: radio resource control signaling, system information, a media access control address control unit and physical layer signaling. ### Claim 2 (depends on 1) The method according to claim 1, wherein the sending scheduling information to a terminal comprises: sending scheduling information to the terminal by means of the target signaling. ### Claim 3 (depends on 1) The method according to claim 1, wherein the scheduling information further comprises: the carrier indication information for indicating the scheduled carrier; and the PRB indication information for indicating the scheduled PRB on the scheduled carrier. ### Claim 4 (depends on 1) The method according to claim 1, wherein PRBs on all carriers configured for the terminal are numbered uniformly in the predefined order. ### Claim 5 (depends on 1) The method according to claim 1, wherein the scheduling information further comprises: the carrier indication information for indicating the scheduled carrier; the bandwidth part indication information for indicating the scheduled bandwidth part on the scheduled carrier; and the PRB indication information for indicating the scheduled PRB in the scheduled bandwidth part on the scheduled carrier. ### Claim 6 (depends on 5) The method according to claim 5, wherein an information length value of the carrier indication information is a first preset value, and is set in a first preset position in the scheduling information; an information length value of the bandwidth part indication information is a second preset value, and is set in a second preset position in the scheduling information; wherein the first preset position is the same as or different from the second preset position. ### Claim 7 A cross-carrier scheduling method for a terminal, the method comprising: receiving scheduling information sent by a base station; determining a target bandwidth part on at least one target carrier according to the scheduling information; scheduling the target bandwidth part by a scheduling carrier where the scheduling information is located; wherein the target carrier is scheduled by the scheduling carrier and configured with at least one bandwidth part, the at least one bandwidth part is a pre-designated frequency domain resource on the target carrier; the target bandwidth part is scheduled by the scheduling carrier among all bandwidth parts on the target carrier; wherein the determining a target bandwidth part on at least one target carrier according to the scheduling information comprises: when the scheduling information includes association information and physical resource block (PRB) indication information for indicating a scheduled PRB, obtaining carrier indication information and bandwidth part indication information corresponding to the association information in the scheduling information according to a pre-stored mapping relationship among the association information, the carrier indication information and the bandwidth part indication information, wherein the association information is predefined or configured by the base station for the terminal, and the terminal receives the association information by target signaling comprising any one of: radio resource control signaling, system information, a media access control address control unit and physical layer signaling, wherein the association information is a scrambling sequence for scrambling physical broadcast channel (PBCH) or synchronization signal (SS) block; using a carrier indicated by the carrier indication information as the target carrier; and using the bandwidth part indication information and frequency domain resource corresponding to the PRB indication information in the target carrier as the target bandwidth part. ### Claim 8 (depends on 7) The method according to claim 7, wherein the determining a target bandwidth part on at least one target carrier according to the scheduling information comprises: when the scheduling information includes carrier indication information for indicating a scheduled carrier and physical resource block (PRB) indication information for indicating a scheduled PRB on the scheduled carrier, using the carrier indicated by the carrier indication information as the target carrier; and using frequency domain resource corresponding to the PRB indication information on the target carrier as the target bandwidth part. ### Claim 9 (depends on 7) The method according to claim 7, wherein the determining a target bandwidth part on at least one target carrier according to the scheduling information comprises: when the scheduling information includes physical resource block (PRB) indication information of a scheduled PRB, using the frequency domain resource corresponding to the PRB indication information as the target bandwidth part. ### Claim 10 (depends on 7) The method according to claim 7, wherein the determining a target bandwidth part on at least one target carrier according to the scheduling information comprises: when the scheduling information includes carrier indication information for indicating a scheduled carrier, bandwidth part indication information for indicating a scheduled bandwidth part on the scheduled carrier, and physical resource block (PRB) indication information for indicating a scheduled PRB in the scheduled bandwidth part on the scheduled carrier, using the carrier indicated by the carrier indication information as the target carrier; and using the bandwidth part indication information and a frequency domain resource corresponding to the PRB indication information in the target carrier as the target bandwidth part. ### Claim 11 (depends on 7) A terminal, comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to perform the method of claim 7. ### Claim 12 A base station, comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to: send scheduling information to a terminal, for cross-carrier scheduling a target bandwidth part on at least one target carrier by means of a scheduling carrier; wherein the target carrier is scheduled by the scheduling carrier and configured with at least one bandwidth part, the at least one bandwidth part is a frequency domain resource pre-designated on the target carrier; and the target bandwidth part is scheduled by the scheduling carrier among all bandwidth parts on the target carrier; wherein physical resource blocks (PRBs) on each carrier configured for the terminal are separately numbered in a predefined order, bandwidth parts on each carrier are independently numbered in units of PRBs in a predefined order, and the scheduling information comprises: association information; and PRB indication information for indicating a scheduled PRB; wherein the association information is information associated with carrier indication information and bandwidth part indication information, the carrier indication information indicates a scheduled carrier, and the bandwidth part indication information indicates a scheduled bandwidth part on the scheduled carrier, wherein the association information is a scrambling sequence for scrambling physical broadcast channel (PBCH) or synchronization signal (SS) block; wherein the association information is predefined or configured by the base station for the terminal, and when the association information is configured by the base station for the terminal, the method further comprises: sending the association information to the terminal by target signaling, wherein the target signaling comprises any one of: radio resource control signaling, system information, a media access control address control unit and physical layer signaling. ### Claim 13 (depends on 12) The base station according to claim 12, wherein the processor is further configured to: send the scheduling information to the terminal by means of the target signaling. ### Claim 14 (depends on 12) The base station according to claim 12, wherein the scheduling information comprises: the carrier indication information for indicating the scheduled carrier; and the PRB indication information for indicating the scheduled PRB on the scheduled carrier. ### Claim 15 (depends on 12) The base station according to claim 12, wherein PRBs on all carriers configured for the terminal are numbered uniformly in the predefined order. ### Claim 16 (depends on 12) The base station according to claim 12, wherein the scheduling information further comprises: the carrier indication information for indicating the scheduled carrier; the bandwidth part indication information for indicating the scheduled bandwidth part on the scheduled carrier; and the PRB indication information for indicating the scheduled PRB in the scheduled bandwidth part on the scheduled carrier. ### Claim 17 (depends on 12) The base station according to claim 12, wherein an information length value of the carrier indication information is a first preset value, and is set in a first preset position in the scheduling information; an information length value of the bandwidth part indication information is a second preset value, and is set in a second preset position in the scheduling information; wherein the first preset position is the same as or different from the second preset position.