Using Look-Ahead Protocol for Mobile Data Broadcast

K. Lam, C. Wong, William Leung
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引用次数: 4

Abstract

In this paper, we propose an efficient approach to maintaining data consistency of broadcast data in mobile computing environments. At the server a special read-only transaction, the broadcast transaction, is scheduled to read data entities from the database for broadcasting data. Obviously, traditional concurrency control algorithms are inadequate and inefficient as the broadcast transaction creates numerous data conflicts with other update transactions, which are concurrently accessing the same set of data entities. Some algorithms for global-reading of databases, Shade Test and Color Test could be a solution. However, we observe that they have also some deficiencies. Therefore, we devise a new and efficient algorithm called Look-Ahead Protocol (LAP) to address this problem. The simulation results show that our algorithm outperforms all existing algorithms
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在移动数据广播中使用前瞻协议
在本文中,我们提出了一种在移动计算环境中保持广播数据一致性的有效方法。在服务器上,安排一个特殊的只读事务,即广播事务,从数据库中读取数据实体以广播数据。显然,传统的并发控制算法是不充分和低效的,因为广播事务与其他更新事务产生了大量的数据冲突,这些事务并发地访问同一组数据实体。一些算法全局读取数据库,色度测试和颜色测试可能是一个解决方案。然而,我们观察到它们也有一些不足。因此,我们设计了一种新的高效算法,称为前瞻性协议(LAP)来解决这个问题。仿真结果表明,该算法优于现有的所有算法
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