Study On The Routing Mechanism Of Carrier-Class Distributed Data Storage System

At present, the core network part of the mobile communication network is mainly composed of three domains which are Circuit Switching domain (CS), IP Multimedia Subsystem domain (IMS), and Evolved Packet System domain (EPS). These three domains are different in the functional entities, service provision, and data storage methods, etc. The data storage systems in different domains were defined as different types. The devices were isolated and the user data can not be associated and interoperable. This makes the data access and management extremely difficult, and limits the deployment of new services rapidly. With the increasing amount of user data, existing data storage system which used the centralized architecture will become the bottleneck of the network, owing to its high cost, low scalability, difficulty in resource sharing and other issues.To solve these problems, we introduced a carrier-grade distributed data storage system which is designed with distributed technology. The system will be used as the integrated data center in communication network. It can meet a variety of core network technologies in data storage and access requirements. The system has a hierarchical structure, including a data storage layer implemented with distributed technology, a data routing layer organized with distributed algorithm, and a business logic layer which is able to handle all types of data access requests. This article describes the data routing layer from the system architecture, entity definition, function modules and the algorithm used in the system, and gives the solutions of region-based routing, multinumber association, disaster recovery and other problems. It is proved that the distributed data storage system can alleviate problem of the traditional architecture whose pressure is too large and which is easy to fail by a single point.