Base station, communication system, communication method, and non-transitory computer-readable medium

A base station as a second base station, comprising:

• at least one memory;
• and
• at least one processor coupled to the at least one memory,
• wherein the at least one processor is configured to acquire, from a first base station, frame offset information indicating a frame offset equivalent to a first difference between a start timing of a radio frame in the first base station and PPS (Pulse Per Second) in a wireless manner or via a backhaul.

A communication system comprising:

• a first base station;
• and
• a second base station,
• wherein the first base station is configured to notify a second base station of frame offset information indicating a frame offset equivalent to a first difference between a start timing of a radio frame in the first base station and PPS (Pulse Per Second) in a wireless manner or via a backhaul.