A radio resource allocation method, wherein the method is applied to a data center network, the data center network comprises multiple wireless transmission units, WTUs, and the method comprises: obtaining transmission rate information of multiple links in the data center network at time points t1, t2,..., and tn, overall traffic volume information of the multiple links in time periods T1, T2,..., and Tm, and radio resource use information of each WTU in the multiple WTUs, wherein each link in the multiple links is a transmission link between two WTUs in the multiple WTUs, each time period in the time periods T1, T2,..., and Tm comprises at least two time points in the time points t1, t2,..., and tn, and any two time periods in the time periods T1, T2,..., and Tm do not overlap in time; characterized by predicting a first transmission rate of a first link at a time point tn+1 in a time period Tm+1 according to the transmission rate information of the multiple links at the time points t1, t2,..., and tn and the overall traffic volume information of the multiple links in the time periods T1, T2,..., and Tm, wherein the first link is one of the multiple links, a time period Tj+1 is a time period following a time period Tj, a time point ti+1 is a time point following a time point ti, i and j are integers, 1≤i≤n, and 1≤j≤m; and determining a path that can satisfy a transmission rate requirement of the first link, and allocating a radio resource of the first link, according to the first transmission rate of the first link at the time point tn+1 and the radio resource use information of each WTU in the multiple WTUs; wherein the predicting a first transmission rate of a first link at a time point tn+1 in a time period Tm+1 according to the transmission rate information of the multiple links at the time points t1, t2,..., and tn and the overall traffic volume information of the multiple links in the time periods T1, T2,..., and Tm comprises: predicting a second transmission rate of the first link at the time point tn+1 according to the transmission rate information of the multiple links at the time points t1, t2,..., and tn; predicting overall traffic volume information of the multiple links in the time period Tm+1 according to the overall traffic volume information of the multiple links in the time periods T1, T2,..., and Tm; and modifying the second transmission rate of the first link at the time point tn+1 according to the overall traffic volume information of the multiple links in the time periods T1, T2,..., Tm, and Tm+1, to obtain the first transmission rate of the first link at the time point tn+1. obtaining transmission rate information of multiple links in the data center network at time points t1, t2,..., and tn, overall traffic volume information of the multiple links in time periods T1, T2,..., and Tm, and radio resource use information of each WTU in the multiple WTUs, wherein each link in the multiple links is a transmission link between two WTUs in the multiple WTUs, each time period in the time periods T1, T2,..., and Tm comprises at least two time points in the time points t1, t2,..., and tn, and any two time periods in the time periods T1, T2,..., and Tm do not overlap in time; characterized by predicting a first transmission rate of a first link at a time point tn+1 in a time period Tm+1 according to the transmission rate information of the multiple links at the time points t1, t2,..., and tn and the overall traffic volume information of the multiple links in the time periods T1, T2,..., and Tm, wherein the first link is one of the multiple links, a time period Tj+1 is a time period following a time period Tj, a time point ti+1 is a time point following a time point ti, i and j are integers, 1≤i≤n, and 1≤j≤m; and determining a path that can satisfy a transmission rate requirement of the first link, and allocating a radio resource of the first link, according to the first transmission rate of the first link at the time point tn+1 and the radio resource use information of each WTU in the multiple WTUs; predicting a second transmission rate of the first link at the time point tn+1 according to the transmission rate information of the multiple links at the time points t1, t2,..., and tn; predicting overall traffic volume information of the multiple links in the time period Tm+1 according to the overall traffic volume information of the multiple links in the time periods T1, T2,..., and Tm; and modifying the second transmission rate of the first link at the time point tn+1 according to the overall traffic volume information of the multiple links in the time periods T1, T2,..., Tm, and Tm+1, to obtain the first transmission rate of the first link at the time point tn+1.