Multi cell network resource allocation algorithm for space earth integrated network

Space integrated communication network is an important development trend of 5g mobile communication system in the future, which can truly realize the global "ubiquitous connection". Aiming at the coexistence of power users and monitoring terminals in smart grid, this paper proposes a multi cell resource scheduling algorithm for space sky integrated network. Firstly, a multi cell cooperative resource allocation model is established according to the service priority of power users, minimum user rate requirements, power and QoS requirements, Then, the dynamic iterative algorithm is used to allocate temporary subchannels to users, and the iterative water injection algorithm considering KKT condition is used to allocate the power of cell users, The optimal solution of users under multi cell cooperation is obtained, so that the power users of each priority can meet the requirements of rate, delay and power, Select the best carrier frequency band and resource unit for transmission to meet the needs of power emergency communication. The simulation results show that the algorithm can provide sufficient resource allocation for high QoS services in the case of traffic congestion, It balances the relationship between fairness and throughput, and improves the service transmission performance.