The information providing apparatus and an information providing method, a wireless communication apparatus and wireless communication method, and a radio communication system

Power consumption for a communication operation of the search client station or access point is reduced when offline. Server using the communication information prediction algorithm to predict the movement route server on the client's position becomes offline or online time and the server returns the location or time, and notifies the client. Communication client function pause offline predicted location or time of arrival of the notification. When the client or the offline location to identify the time points identified, determine the current location or the time has been reached online return prediction position or time, and resume communication.