Scheduling information sending methods, scheduling information receiving methods and apparatus

A method for sending scheduling information, performed by a network device, and comprising:

• receiving channel state information sent from a terminal device;
• generating the scheduling information according to the channel state information, wherein the scheduling information comprises a current frequency hopping and an adjacent frequency hopping within a time unit, a carrier frequency of the current frequency hopping is not located in a coherent bandwidth of the adjacent frequency hopping, a vacant symbol is present in the time unit, a pilot signal that is configured on the vacant symbol and has a frequency identical to the carrier frequency of the current frequency hopping adjacent to the vacant symbol is used for channel estimation on the current frequency hopping, and/or, a pilot signal that is configured on the vacant symbol and has a frequency identical to a carrier frequency of the adjacent frequency hopping adjacent to the vacant symbol is used for channel estimation on the adjacent frequency hopping;
• and
• sending the scheduling information to the terminal device.