基于MSC-POOL的IU接口路由优化方法研究与实现

发布时间：2019-03-27 13:53

【摘要】：随着移动通信网络规模的不断扩大,不同制式的无线网络之间的互操作问题凸显,同时移动通信网络对核心网设备的利用率以及安全性的要求也越来越高。MSC POOL技术应运而生,MSC POOL打破传统的无线网络与核心网的——固定控制关系,把若干个控制着BSC/RNC的MSC放在一个POOL内,POOL内的MSC为整个相连接的BSC/RNC服务。UE可以在POOL内的RNC/BSC间漫游,而不必更换MSC,可解决频繁的Iu接口和MSC间接口的信令交换等问题。MSC POOL在带来便利性和安全性的同时,也带来了路由算法的需求,同时RNC/BSC与MSCPOOL的路由算法存在诸多隐患,概率性错误的路由算法导致不易察觉的连接错误,严重影响客户感知度。本文遵照中国移动通信Iu接口的技术规范,综合考虑RNC网元的运行效率、稳定性、软件开发周期以及成本开销等因素,使用支持快速开发、高效率转换、转换过程数据质量控制功能的技术,实现了可扩展的Iu接口寻址算法。基于MSCPOOL的Iu接口寻址算法,支持无线网与核心网节点间路由选择的多种特殊性要求,模块开销小、功能上简约实用,满足实时处理需求。路由处理系统采用框架结构,根据Iu接口直传消息的类型,分别从高层协议的控制原语中提取底层消息中目标路由信息字段所需的参数,最终择优选择目标路由。整个系统内部的实现采用模块方式,层间交互的实现采用原语方式,完全参照ITU规范执行,有效地解决了无线网与核心网节点间各类直传消息的路由选择问题。基于MSCPOOL的Iu接口寻址算法的成果已经投入现网,进行了大量的实际应用,应用的效果良好。本课题的完成是可扩展的Iu接口寻址算法应用于移动通信网络支撑领域的一次有价值的尝试,为移动通信行业的相关网络维护需求的解决方案提供了一个有意义的范例。
[Abstract]:With the expansion of mobile communication network scale, the interoperability between different wireless networks is becoming more and more prominent. Meanwhile, the mobile communication network requires higher and higher utilization rate and security of core network devices. MSC POOL technology emerges as the times require. MSC POOL breaks the fixed control relationship between the traditional wireless network and the core network, puts a number of MSC controlling BSC/RNC in one POOL, and the MSC in POOL serves the whole connected BSC/RNC. UE can roam between RNC/BSC in POOL. Without replacing MSC, it can solve the problems of frequent signaling exchange between Iu interface and MSC interface. MSC POOL not only brings convenience and security, but also brings the requirement of routing algorithm. At the same time, the routing algorithm of RNC/BSC and MSCPOOL has many hidden troubles. Probabilistic routing algorithms lead to undetected connection errors, which seriously affect customer perception. In accordance with the technical specification of the Iu interface of China Mobile Communication, this paper takes into account the operational efficiency, stability, software development cycle and cost overhead of the RNC network elements, and uses support for rapid development and high efficiency conversion. The scalable Iu interface addressing algorithm is realized by transforming the process data quality control function. The Iu interface addressing algorithm based on MSCPOOL supports many special requirements of routing between wireless network and core network nodes. The module has the advantages of low cost, simple and practical function, and meets the real-time processing requirements. The routing processing system adopts the frame structure, according to the type of direct message of Iu interface, extracts the parameters of the destination routing information field from the control primitive of the high-level protocol respectively, and finally selects the target route optimally. The implementation of the whole system adopts module mode, and the realization of inter-layer interaction adopts primitive mode, which is carried out completely according to ITU specification. It effectively solves the routing problem of all kinds of direct messages between wireless network and core network nodes. The result of the Iu interface addressing algorithm based on MSCPOOL has been put into the current network, and has been applied in a large number of practical applications, the application effect is good. The completion of this paper is a valuable attempt that the scalable Iu interface addressing algorithm is applied in the field of mobile communication network support. It provides a meaningful example for the solution of the related network maintenance requirements in the mobile communication industry.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

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