Laundry treatment apparatus and method of controlling the same

A method of controlling a laundry treatment apparatus that includes a tub having a space for containing water, a drum rotatably disposed in the tub, the drum having a space for containing laundry and a drum port provided at an upper wall thereof, a chamber to guide water, an agitator rotatably disposed in the drum to create water flow and to transfer water to the chamber, and a filter disposed at a level higher than the agitator to filter water introduced into the chamber, the method comprising:

• performing a water supply operation for washing operation by supplying water to the tub;
• after performing the water supply operation, performing a first dispersion operation by rotating the agitator to an angle less than 360 degrees at a rotational speed that is less than a rotational speed set for a first agitating operation;
• performing a water flow creation operation by rotating the agitator and the drum in a same direction to cause water in the tub to be provided to an upper part of the tub and to be introduced into the drum through the drum port;
• after performing the water flow creating operation, performing a second dispersion operation by rotating the agitator to an angle less than 360 degrees at a rotational speed that is less than a rotational speed set for the first agitation operation;
• performing the first agitating operation by rotating the agitator to an angle less than 360 degrees so as to reduce laundry tangling;
• performing a first filtering operation by rotating the agitator to an angle of 360 degrees or more so as to supply water to the filter and to filter the water through the filter;
• and
• after completing the first filtering operation, performing a second agitating operation by rotating the agitator to an angle less than 360 degrees
• wherein the first agitating operation, the first filtering operation, and the second agitating operation are sequentially performed or are successively performed.