Cross-carrier scheduling method and device

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.

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.