基于消息的Parlay X网关过载控制算法  

Overload Control Algorithm of Parlay X Gateway Based on Message

作　　者：张载龙[1] 王亚宁[1] 李炳林[2] 刘世栋[2] 

机构地区：[1]南京邮电大学信息网络技术研究所,江苏南京210003 [2]中国电力科学研究院信息通信研究所,江苏南京211106

出　　处：《计算机技术与发展》2014年第10期119-123,共5页Computer Technology and Development

基　　金：南京邮电大学攀登计划(NY210012);中国电力科学研究院南京分院(2013外21);江苏省科技科技成果转化项目(BA2012024)

摘　　要：为了解决目前Parlay X网关过载算法灵活性低、不能有效地使会话量最大化的问题,给出了基于合约的Parlay X网关系统架构。根据Parlay X消息类型特点设置消息优先级,根据消息优先级选择丢弃或者缓存消息,之后根据负载情况进行负载均衡以及接入控制,通过四个阶段来实现过载控制过程。实验结果表明,相比较于传统过载控制,该机制能在保证新建会话消息接收数量的同时提高其他类型消息的接收数量,减少平均服务时间,在满足合约限制的情况下,保证最大会话数量。In order to solve the problems that the Parlay X gateway overload algorithm has low flexibility and cannot make the messages maximized,propose a Parlay X gateway system architecture based on contract. Set the priority of the message according to the feature of the Parlay X message,drop or cache the messages according to the message priority,after that conduct the load balance and admission control in accordance with load,the overload control process has been realized by four steps. The experimental results show that compared with traditional overload control,the proposed algorithm can reduce the average service time,increase the received number of calls,while guaranteeing the number of MakeCall message,make sure the maximal messages number when meeting the contract constrains.

关 键 词：过载控制 接入控制 负载均衡 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]