摘要： 在基于OSA 的CMPP 协议的基础上，设计了移动短信增值服务系统的网关接口平台，通过短信管理、接收、发送和链路维持模块实现对短信的存储和转发，对短信状态的变迁过程进行了分析，提出了基于线程和二级数据缓存机制的短信实时并发算法，解决了短信延时和并发发送问题。

关键词: 开放业务接入；CMPP 协议；链路维持；状态变迁

Abstract: This paper designs a gateway platform of mobile value added service based on open service access and China mobile peer to peer protocol, the storage and transmitting of short message is implemented by management, receiving, sending and link maintaining modules. The variance status of short message is analyzed in detail. It promotes a short message real-time parallel sending algorithm based on thread and two level data cache method to solve the problem of short message delay and parallel sending.

Key words: Open service access(OSA); China mobile peer to peer protocol; Link maintaining; Status variance