Exploring Application Layer Protocol Relationships in SoftSwitch  

作　　者：Zhu Xiaomin Liao Jianxin Chen Junliang Li Tonghong 

机构地区：[1]State Key Lab of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China [2]EBUPT Information Technology Co., Ltd., Beijing 100191, China [3]Technical University of Madrid, 28660 Madrid, Spain

出　　处：《China Communications》2009年第4期155-167,共13页中国通信（英文版）

基　　金：National Science Fund for Distinguished Young Scholars (No. 60525110);National 973 Program (No. 2007CB307100, 2007CB307103);National Natural Science Foundation of China (No. 60902051);Development Fund Project for Electronic and Information Industry (Mobile Service and Application System Based on 3G)

摘　　要：Relationships between application layer protocols in softswitch are explored in this paper.Two notions, i.e.protocol relationship and protocol grouping, are proposed, which are not clearly defined and even not paid much attention to before.On the basis of a well known protocol relationship named protocol conversion, three novel protocol relationships including protocol collaboration relationship, protocol cooperation relationship and protocol independent relationship are presented, so that protocol relationships are classified into four types.According to the functionality and purpose of each protocol, main protocols related to softswitch are divided into five groups.As to protocol conversion in softswitch, information flow trail(IFT) is utilized to facilitate problem solving.A decision rule for protocol conversion mode is proposed to guide how to choose between direct conversion and indirect conversion.A property of protocol relationships in softswitch is induced from all kinds of service scenarios of softswitch.This property summarizes protocol relationships within each protocol group or between two specific protocol groups.A merit of protocol grouping together with classification of protocol relationship is also presented.The effort of this paper pushes the protocol engineering to go ahead.Relationships between application layer protocols in softswitch are explored in this paper. Two notions, i.e. protocol relationship and protocol grouping, are proposed, which are not clearly defined and even not paid much attention to before. On the basis of a well known protocol relationship named protocol conversion, three novel protocol relationships including protocol collaboration relationship, protocol cooperation relationship and protocol independent relationship are presented, so that protocol relationships are classified into four types. According to the functionality and purpose of each protocol, main protocols related to softswitch are divided into five groups. As to protocol conversion in softswitch, information flow trail （IFT） is utilized to facilitate problem solving. A decision rule for protocol conversion mode is proposed to guide how to choose between direct conversion and indirect conversion. A property of protocol relationships in softswitch is induced from all kinds of service scenarios of softswitch. This property summarizes protocol relationships within each protocol group or between two specific protocol groups. A merit of protocol grouping together with classification of protocol relationship is also presented. The effort of this paper pushes the protocol engineering to go ahead.

关 键 词：protocol relationship protocol grouping SOFTSWITCH information flow trail 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]