基于代价函数的动态分布式解析映射机制

Distributed dynamic mapping scheme based on cost function

针对身份与位置的动态解析映射问题,依据终端的移动模式和通信特征,提出了一种基于代价函数的动态分布式移动解析映射机制。该机制将移动终端的通信状态划分为移动更新、均衡传输和解析查询3种通信模式,以最小化解析映射代价为目标,分别提出了基于分布式多播、一致性散列协同和主动式域内共享的解析映射方法,设计了对应的注册更新、解析查询和数据路由解析优化策略。仿真结果表明,该机制实现了移动过程中解析映射代价的最小化,具有较小的解析时延,对网络结构的动态变化具有良好的适应性。

For supporting efficient host mobility and mapping identifiers onto locators, a distributed dynamic mobilitymapping scheme based on cost function was proposed. In the scheme, depending on the mobility pattern and communica-tion feature, the communication of mobile node is divided into three communication models, namely, moving updatemodel, balanced transmission model and resolving query model. In order to minimize the total resolving cost, three map-ping approach are proposed based on distributed multicast, consistent hash functions and proactive sharing respectively inthe mobile domain. For each mapping approach, corresponding registration update, resolution query and packet deliverystrategies are designed. Simulation results show that the scheme can achieve the minimum resolving cost, and can havelow resolve latency and good adaptability for network topology dynamic changing.