FIG. 2 is an example of a system architecture according to an embodiment of the disclosure;
FIG. 3A is an example of a base station structure according to various embodiments of the disclosure;
FIG. 3B is an example of a base station structure according to various embodiments of the disclosure;
FIG. 4A is an example of migrations of three types of relay nodes according to various embodiments of the disclosure;
FIG. 4B is an example of migrations of three types of relay nodes according to various embodiments of the disclosure;
FIG. 4C is an example of migrations of three types of relay nodes according to various embodiments of the disclosure;
FIG. 5 is an example of a flowchart of a communication method according to a first aspect according to an embodiment of the disclosure;
FIG. 6A is an example of a flowchart of a communication method according to a second aspect according to an embodiment of the disclosure;
FIG. 6B is an example of a communication method according to various embodiments of the disclosure;
FIG. 6C is an example of a communication method according to various embodiments of the disclosure;