3GPP演进分组系统中的网络发现和选择

Network discovery and selection in 3GPP EPS

3GPP演进分组系统通过多接入网的发现和选择机制可支持用户在多种接入网络之间的无缝移动性来满足用户的不同需求。常用的网络发现方法有分布式和集中式;常见的网络选择算法有代价函数法、模糊逻辑法和灰度关联分析GRA等。每种方法都有其自身的优势和特定的使用场景,因此也存在一些问题需要下一步继续开展研究。

3GPP Evolved Packet System supports users＇ seamless mobility among a variety of access networks to meet the different needs of users, through a multi-access network discovery and selection mechanism. Commonly used network discovery methods are distributed and centralized, and commonly used network selection algorithms are cost function, fuzzy, logic, gray relational analysis, etc. Each method or algorithm has its own advantages and specific usage scenarios, also has some issues for the further study.