Base station, communication method of the communication terminal and wireless communication systems, as well as base station, a method of communication in the communication method and radio communication system in the communication terminal

摘要

PROBLEM TO BE SOLVED: To provide a technique capable of effectively utilizing a radio resource.;SOLUTION: A TDD frame used in a radio communication system 100 includes a switching subframe which is a subframe used for transmitting a known signal in another radio communication system different from the radio communication system 100. If a base station of another radio communication system exists in the vicinity of a base station 1, communication using the switching subframe is not performed between the base station 1 and a communication terminal 2. On the other hand, if a base station of another radio communication system does not exist in the vicinity of the base station 1, communication using the switching subframe is performed between the base station 1 and the communication terminal 2.;COPYRIGHT: (C)2012,JPO&INPIT