A wireless base station is disclosed. The wireless base station includes a traffic-identifying section which determines a type of traffic of data input; a resource manager and allocator which allocates, for the data input, a wireless resource at constant periods and in a constant pattern when the data input is of a type of traffic that is suitable for periodic allocation, and successively allocates a wireless resource available, for traffic of a type other than the type of the traffic that is suitable for the periodic allocation; and a retransmission-control switching unit which applies synchronous retransmission control for the type of the traffic that is suitable for the periodic allocation, and applies asynchronous retransmission control for the traffic of the other type when there is a retransmission request.