Abstract: A mobile terminal and communication method capable of increasing the communication continuity and maintaining the communication quality of real-time communications are provided. The communication method according to the present invention is a method of communicating between a first mobile terminal 1a and a second mobile terminal 1b capable of wireless communication in a plurality of communication networks. First, information required to establish a communication session for performing communications is exchanged via the call control device 3 between the first mobile terminal 1a and the second mobile terminal 1b. Thereafter, a session to establish a communication session is established on the basis of the required information that has been exchanged. Communications are executed between the first mobile terminal 1a and the first mobile terminal 1b by means of the established communication session.

Abstract: [Problems] Mobile communication enabling continuation of TCP communication while maintaining the quality in a real-time communication. [Means for Solving Problems] A mobile terminal 3a comprises an application executing section 39 for executing a data transmitting/receiving application, a quality monitoring section 38 for detecting the quality of communication such as of a wireless LAN 4, an address control section 31 for making it enable to provide either or both of a static address and a care-of address to the application as a receiving address for the data transmission/reception depending on the type of the application being executed by the application executing section 39 and the result of the detection t by the quality monitoring section 38, and a network selection switching section 33 for selecting a communication route via a home agent when the fixed address is selected as the receiving address and for selecting a communication route not via the home agent when the care-of address is selected.