摘要
现有的呼叫控制模型不能满足多媒体与移动业务对承载的复杂控制需求.本文在不增加现有模型复杂度的前提下提出一种通用的两层、信令-承载控制相分离的呼叫控制模型SBS-CSM.SBS-CSM在核心会话控制模块完成协议无关的通用呼叫控制功能,并将信令链接与媒体链接的控制分离,将二者的控制能力独立的提供给业务.在协议接入处理模块完成具体协议的媒体链接控制功能.采用该模型的软交换系统的实测结果验证了该模型的可用性与高效性.
Present call model can not satisfy all complex controlling requirements required by multimedia services and mobile services for transport bearer. This paper proposed a novel universal layered and Signalling and Bearer Separated Control State Model (SBS-CSM) without increasing complexity compared to current call model. SBS-CSM provides protocol independent call control function in session control module by separating signalhng control and bearer control into two unrelated state machines and opens those two control capabilities to service control independently. Protocol access module accomplishes the specific media link processing for each supported protocol. The performance data gathered from softswitch system implementing SBS-CSM illustrates the availability and efficiency of SBS-CSM.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2005年第10期1757-1760,共4页
Acta Electronica Sinica
基金
国家自然科学基金(No.90104024)
国家杰出青年科学基金(No.60125101)
高等学校博士学科点专项科研基金(No.20020013004)
关键词
软交换
多媒体呼叫
呼叫控制模型
信令控制
承载控制
softswitch
multimedia call
call control model
signalling control
bearer control