Patent ID: 8588800
Filing Date: 2013-11-19
Classification: H04W

Abstract:
1. A communication control method used by a base station to allocate a radio resource to a user terminal which performs different-frequency measurement, comprising the steps of: transmitting to the base station, by the user terminal, a request indicating whether a measurement gap for different-frequency measurement is needed, as a measurement report of an RRC protocol indicating a propagation level of the base station, when a need for data communications between the user terminal and the base station arises while the user terminal is performing discontinuous reception; and controlling, by the base station, the radio resource allocated to the user terminal based on whether the measurement gap is needed, wherein: an RRC message indicating that the measurement gap is needed comprises a measurement report which is transmitted under the following conditions: when a propagation level is below a predetermined threshold; when the measurement gap is not allocated; and when a persistent scheduling mode in which data are periodically transmitted using predetermined radio resources is used and retransmission data are transmitted between timings of discontinuous reception when retransmission is needed, while a discontinuous reception mode is applied.