关键词: 大规模接入系统, 分布式系统, 混合式负载平衡, 随机负载迁移, 数据接入系统

Abstract: To solve some problems of the current load balancing algorithms for distributed systems:(1) The role of each node in the system is fixed, the system has no adaptability. (2) Load balancing algorithm is not universal. (3) The migration task is too large, and the load cycle is too long. A hybrid load balancing algorithm was presented by this paper. Firstly, a distributed receiving system model was designed by this paper. Model was divided into three parts: receiving level，handling level and saving level. In receiving level, a home-made transmission protocol was used to improve the reception capability of the system. And then, the random load transfer strategy was used by load balancing algorithm. According to the status of the node, the task of load was randomly transferred. the problems of long load cycle and load moving back were solved by this strategy. Finally, distributed control node selecting strategy was adopted to give the nodes the adaptability capability. The experimental results show that the average delay in each layer of the system is in milliseconds, and the system load balancing takes less than 3 minutes. Experiment prove that the load balancing mechanism has short load cycle and fast response, etc. It could improve the reception capability of the distributed system.

Key words: Large-scale Communication System, Distributed Parallel System, Hybrid Load Balance, Random Load Migration, Data Access System