WiMAX下的列调强拆SIP扩展方案  

SIP Extension Scheme of Train Dispatching Force Disconnect on WiMAX

作　　者：谢楠[1,2] 刘真[1,2] 李红辉[1,2] 江苑[1,2] 

机构地区：[1]北京交通大学计算机与信息技术学院,北京100044 [2]高速铁路网络管理教育部工程研究中心,北京100044

出　　处：《计算机工程》2013年第3期7-11,共5页Computer Engineering

基　　金：国家"863"计划基金资助项目(2011AA040505;2012AA040912)

摘　　要：会话初始化协议(SIP)作为VoIP的主流会话控制协议,基本功能相对简单,不能满足无线列调核心业务的强拆需求。针对该问题,提出WiMAX网络环境下基于SIP协议的无线列调系统结构,对SIP协议消息类型和事务进行扩展,设计信令流程,并给出SIP客户端与服务端的扩展实现方案。实验结果表明,该方案满足铁路强拆通话建立的时间要求,可以成功实现强拆。Session Initiation Protocol（SIP）, as a core session control protocol of VolE its base functions are a bit simple. It can not meet the needs of force disconnect which is a core business of wireless train dispatching system. To the question above this provides the architecture of the wireless railway dispatching system under the environment of WiMAX, extends the SIP message methods and transactions, designs the signaling process of new SIP message method, and provids the extension scheme on the client side and server side. Experimental results show that this scheme can meet the establishing time requirement of force disconnect on railway, and can realize force disconnect successfully.

关 键 词：WIMAX网络 会话初始化协议 无线列调 强拆 会话控制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]