Patent ID: 9049713
Filing Date: 2015-06-02
Classification: H04W

Abstract:
1. A radio communication apparatus used as one of a plurality of second radio communication apparatuses in a radio communication system in which a first radio communication apparatus receives data from the plurality of second radio communication apparatus, the radio communication apparatus comprising: a detection section which detects a first radio resource that is assigned by the first radio communication apparatus and that can be used on a contention basis by the plurality of second radio communication apparatus for data transmission; and a transmission processing section which selectively performs, at the time of the first radio resource being detected, one of a first transmission method using the first radio resource for data transmission and a second transmission method using a second radio resource assigned by the first radio communication apparatus by which random access is performed for data transmission, wherein the transmission processing section preferentially selects and performs the first transmission method when information indicating permission to use the first radio resource is received.