The invention relates to a wireless communication field, which discloses a method, a system and an equipment of resource assignment so that the system resource can be efficiently facilitated. The invention comprises the processes: a network side sends to a terminal half-continuing assignment information with assignment resource scope for the terminal and information whether the assignment is continuing or not; the terminal obtains the resource scope assigned by the terminal according to the received half-continuing assignment information, detects resource available in the scope when the terminal demands for resource during the assignment continuing period, and takes the detected available resource as useable resource for the terminal. The terminal can be a terminal of resource that has not been assigned or a terminal of resource that has been continuously assigned or discontinuously assigned.