This paper studies the problem of cooperative adaptive cruise control(CACC) of a network connected vehicle queue under the restriction of road communication resources, a time-delay feedback control method of network connected vehicle cooperative adaptive cruise with joint communication resource allocation is proposed. Firstly, under the head vehicle front vehicle following communication topology, a bipartite graph is established through the number of communication links of each vehicle in the vehicle queue, the available communication resources of this section and the spacing error between vehicles at the current time. The limited communication resources are scheduled according to the spacing error between vehicles, and the communication resources are reasonably allocated to the following vehicles with large spacing error. Then, using the asymmetric PD control protocol and the longitudinal model of fleet delay, the linear matrix inequality technology is used to calculate the CACC controller of network connected vehicles, and the sufficient conditions for the string stability of the vehicle queue are further obtained. Finally, the effectiveness of this method is verified by the Matlab/CarSim joint simulation.