A network connection method and apparatus for improving network connection performance of a mobile station in a Broadband Wireless Access system is provided. The toilet moving cart system includes a base for receiving a conventional toilet, a stub member within the base, a plurality of wheels attached to the base, and a handle attached to the base. Charging current is fed from the charging station through the charging cable. The partially hydrolyzed fucoidan can also be sulfonated. The voltage swing produced by the differential amplifier prevents forward biasing of the second output transistor.