COMMUNICATION SYSTEM, MOBILE STATION DEVICE, BASE STATION DEVICE, MEASUREMENT METHOD AND INTEGRATED CIRCUIT

摘要

In the disclosed communication system, a measurement gap is efficiently set between a mobile station device (1) and a base station device (2). The communication system comprises a base station device (2) which sends and receives in a multiple frequency bandwidth cells, and the mobile station device (1) which wirelessly connects with the base station device (2) simultaneously using cells of multiple set frequency bands. The base station device (2), for each frequency bandwidth, sets the information necessary for measurement of said frequency bandwidths to the mobile station device (1); the mobile station device (1) determines on the basis of the reception performance of the mobile station device (1) whether or not it is necessary to stop reception processing of at least one frequency bandwidth in order to measure the set frequency bandwidths, generates gap necessity information indicating the determination result and transmits said gap necessity information to the base station device (2).