Allocation of communication resources in the unlicensed frequency band to devices operating in the licensed frequency band

摘要

A communication device that communicates in the licensed frequency band specifies an unused unlicensed communication resource in the unlicensed frequency band. The communication device communicates within the unlicensed frequency band using the specified unlicensed communication resource. In some situations, unused unlicensed communication resources are identified based on the resource information received from the base station, but the resource information identifies unlicensed communication resources that will be used by the base station. To do. In other situations, unused unlicensed communication resources are based on frequency measurement of the unlicensed frequency band over an observation period longer than the detection period used by unlicensed equipment using the unlicensed frequency band. Identified.