Network user association and resource allocation joint optimization method

The invention discloses a network user association and resource allocation joint optimization method, which comprises the following steps of: establishing a time delay model based on a vacation queuetheory, and converting time delay into a data transmission rate for balancing LAA network average queue time delay; solving the transmission rate on the subcarrier k, and obtaining the transmission rate constraint on the subcarrier k according to the LAA network average queue delay constraint; planning an LAA network JUARA optimization problem into a P1 sub-problem and a P2 sub-problem; convertingthe problem P2 into a user association and resource allocation joint optimization problem P3, introducing an additional minimization problem, combining the additional minimization problem with the problem P3 to obtain a problem P4, and solving the problem P4; and through a user association reduction strategy, solving the problem P4 again, and repeating the process until the user association and resource allocation results