Communication method, device, and system

A method, comprising:

• determining a plurality of sub-areas, wherein a geographical area range of the plurality of sub-areas overlaps a coverage area of a first cell, wherein the first cell is a non-terrestrial network (NTN) cell in which a terminal device locates;
• and
• sending area configuration information to the terminal device, wherein the area configuration information comprises center location coordinate information of each sub-area of the plurality of sub-areas and area radius information of each sub-area of the plurality of sub-areas;
• and
• wherein the area configuration information is usable for determining a first sub-area, and the first sub-area is a sub-area in which the terminal device is currently located and is in the plurality of sub-areas, and measurement is performed based on information about one or more terrestrial network (TN) neighboring frequencies corresponding to the first sub-area, and wherein information about each neighboring frequency in the information about the one or more TN neighboring frequencies comprises an absolute radio frequency channel number (ARFCN) of each neighboring frequency in the information about the one or more TN neighboring frequencies.

An apparatus, applied to a terminal device, the apparatus comprising:

• at least one processor and non-transitory memory, wherein the memory stores a program to be executed by the at least one processor, the program including instructions for:
• receiving area configuration information from a network device, wherein the area configuration information indicates information about a plurality of sub-areas, and a geographical area range of the plurality of sub-areas overlaps a coverage area of a first cell, and wherein the first cell is a non-terrestrial network (NTN) cell in which the terminal device locates, and wherein the area configuration information comprises center location coordinate information of each sub-area of the plurality of sub-areas and area radius information of each sub-area of the plurality of sub-areas;
• determining a first sub-area based on the area configuration information, wherein the first sub-area is a sub-area in which a terminal device is currently located in the plurality of sub-areas;
• and
• performing measurement based on information about one or more terrestrial network (TN) neighboring frequencies corresponding to the first sub-area, and wherein information about each neighboring frequency in the information about the one or more TN neighboring frequencies comprises an absolute radio frequency channel number (ARFCN) of each neighboring frequency in the information about the one or more TN neighboring frequencies.