实时广播环境中的弱可串行化并发控制  

Weak Serializable Concurrency Control for Real-Time Broadcast Environments

作　　者：党德鹏[1] 刘云生[1] 

机构地区：[1]华中科技大学计算机学院,武汉430074

出　　处：《计算机科学》2002年第9期94-95,85,共3页Computer Science

基　　金：国家自然科学基金(60073045); 国防预研基金(00J15.3.3.JW0529)

摘　　要：1.引言 随着便携计算机及无线通讯技术的快速发展,移动计算已经成为现实,其中主要采用数据广播方法进行数据发布.广播模式的一个显著特征是通讯的不对称性,即下行带宽比上行带宽宽很多.In this paper, we formally define the new notion of correctness called weak serializability and prove that it is more relaxing than stringent serializability while database consistency can be ensured. After the necessary and sufficient conditions for weak serializability are shown, corresponding concurrency control protocol based on this criterion is outlined for broadcast environment. Finally, in a series of simulation studies, experimental results show a substantial reduction in response time as compared to existing approaches.

关 键 词：数据广播 实时广播环境 弱可串行化并发控制 随机信号 

分 类 号：TN934.2[电子电信—信号与信息处理]