面向超级基站的动态迁移环境优化设计

Optimized design of super BS-oriented living migration environment

为了解决超级基站中协议处理实体动态迁移过程存在丢包且耗时长的问题,依据KVM动态迁移源码,结合通信业务特征,建立了一种迁移成本模型.根据该模型中的关键参数对超级基站的动态迁移系统框架进行优化,并针对优化后的迁移系统框架,设计并实现了不同类型的迁移实验方案,从而验证成本模型的正确性.实验结果表明,该优化方案能够明显降低迁移环境的总迁移时长,成本模型中每轮迭代的内存量对迁移时间起决定性作用.

In order to solve the problem of packet loss and long time consumption in the process of living migration of the protocol processing entity in super BS, a migration cost model is established in this article based on the living migration source codes of KVM combined, meantime, with the characteristics of com munication service. According to the key parameters in this model, the dynamic migration system frame work of super BS is optimized and aimed at it, a variety of options of migration experiments are designed and implemented to verify the correctness of the cost model. The experimental results show that the opti mization scheme can significantly reduce the total migration duration of the migration environment;the a- mount of memory for each iteration round in the cost model will play a decisive role to the migration time.